Hey everybody! Looks like I'll be spending a little bit of time around these boards -- I'm looking to take my GMATs in the early Fall.
I'd been casually prepping up for the test over the past couple months, but I've been having a pretty hard time with certain sections.
I generally test well in standardized tests (did well on APs, 1450 on SATs, and 750+'s on SAT2's), but I've been running into lots of bad scores on my Kaplan GMAT book. Some sections I've been doing well, like reading comprehension, but other sections like sentence correction and data sufficiency have been killing me (i.e., 1 out of 3 wrong, or more

). Trudging through this book and doing more questions doesn't seem to be helping out, either... my % hasn't improved much, if at all.
I'm going to bite the bullet and order some more advanced books, as I don't think the ~15-20 pages of sentence correction tips in the Kaplan book is going to raise my score much, but in the meantime -- can anybody offer me any tips? Has anybody been in this situation before and gotten over the hump? Am I just approaching the GMAT the wrong way?