I noticed that the last CAT was easier relative to th others. I received far fewer 700-800 level questions than those of previous exams. So, I am not sure how to interpret the result.
Did this happen a bit more on quant than verbal? I'm just looking at your mix of scores - your quant score was pretty steady, while verbal fluctuated a bit more. That means that you were always pulling from the same general part of the pool on quant, so by the last test, you're going to start to run out of questions.
In some of my exams, by the 20-26th questions I am 4-5 questions behind where I should be.
Yes, this is definitely hurting your score and you're losing points on things you could be getting right. Part of fixing this is going to be showing yourself that it's not really helping you to spend 3, 4, 5! minutes on a single problem. You aren't getting more of those right, plus you're also costing yourself points later in the test. Go count out those problems and "prove" the hurt to yourself. That'll make it easier for you to let go when you need to let go.
My slowest time is in inequalities & VIC questions....I am spending over 3 mins on the wrong answers and 2:50 mins on the correct answers for these topics. Nonetheless my percentage correct is good on VIC questions 83% and very poor in inequalities 29%.
Goal #1: get the inequalities Qs wrong faster. (Seriously - you're not even getting them right anyway, so why spend the time?)
Goal #2: see whether you can learn to do those VIC questions in 2 to 2.5 min instead. Where are you losing time? Are you slow with the VIC technique? Are you trying to do algebra instead? Do you not know how to decide the best times to use algebra vs. VIC vs. a hybrid? Etc.
You're right that probability and combinatorics are not that common, so don't worry much about those. If you happen to get an easier one that you can do, do it. If you happen to get a harder one, know how to make an educated guess, make it, and move on. On geometry, you said that you really only miss the 700+ questions, so that area is of less concern right now.
Keep tabs on the kinds of questions on which you tend to spend too much time, so that you can already be alert and wary whenever that kind of question pops up. Know how to make an educated guess on that type of question.
I think you would also benefit from a timing exercise: learning about how long one minute is without looking at a watch or stopwatch. If you don't have one already, buy yourself a stopwatch with lap timing capability. When you go to do a set of problems, start the stopwatch but turn it over so you can't see the time. Every time you think one minute has gone by, push the lap button. When you're done, see how good you were - and whether you tend to over or underestimate. Get yourself to the point where you're within 15 seconds either way on a regular basis (that is, you can generally predict between 45 sec and 1min 15 sec). Note: at the same time that you are using the stopwatch to time this "1-minute" thing, also use the OG Stopwatch (in your student center) to track the total time spent on each question.
Now, how do you use that when doing problems? If you're not on track by one minute*, make an educated guess and move on. (The general idea is that if you're not on track by the halfway mark, you're unlikely to figure out what's holding you back AND have time to do the whole problem in the 1 min you have left.)
* For SC, 1min is well beyond the half-way mark (we're supposed to average about 1m15s here), but you can almost always eliminate at least some choices on SC in that timeframe. Once you've got that "I'm around the 1min mark and I'm struggling" feeling, go through any remaining choices ONCE more. Pick one. Move on.
When you talk about your RC timing - are you timing yourself separately for the 1st question? The test reports will show the amount of time you took to read PLUS the amount of time you took to answer the first question (because the computer, obviously, can't tell when you stopped reading and when you started trying to answer the first question). So if you are taking 2.5m on the initial read-through and 1.5m to answer the 1st Q, for a total of 4m, that's reasonable.
Here's an article about how to conduct the initial read-through:
http://www.beatthegmat.com/mba/2010/04/23/how-to-read-a-reading-comp-passageOn SC, you said "My average time correct is 1:10 but my avg time wrong is 1:30. " That's not too bad of a spread. You're going to tend to get the harder ones wrong, and the harder ones are actually harder, right? So you're going to spend a little more time on them too. It sounds like you've got a good plan here in terms of review; here's another article that might help:
http://www.beatthegmat.com/mba/2010/03/21/how-to-analyze-a-gmatprep-sc-questionOkay, now for the big question: should you reschedule your test?
You did a good job on your last practice test, but I'm a little worried that there might have been some inflation for the reasons discussed. I'm also worried about the timing problem you describe on quant - that's the kind of thing you definitely want to have fixed by test day.
Work on the above items and then, 5 to 7 days before the real thing, take your final practice test. If you haven't exhausted your GMATPrep tests yet, take one of those.
NOTE#1: TIME yourself on each question for that test. If you don't already have one, get a stopwatch with lap timing capability and learn how to use it before that test.
NOTE#2: Every time you have to guess, make a little star or some other mark on your scrap paper. When you're done, see how often you got lucky. If you narrowed to 50/50, you should expect to get lucky about half the time. If you didn't narrow at all, you should expect to get lucky about 20% of the time. If you guessed randomly 4 times and happened to get all 4 right, then you know that you got extraordinarily lucky and your score might be inflated.
NOTE#3: And, of course, take the test under full official conditions.
Then see how you do. Is your score 700+? Have you generally fixed the timing problem? Did you not get "too lucky" and inflate your score? If you feel comfortable with where you're at, keep your test date; if you don't, reschedule.
(Note: you have to reschedule at least 7 days in advance in order to pay only a rescheduling fee of $50; if you reschedule within 7 days, you will have to pay the whole $250 fee again.)