Given your recent practice test scores, provided you took them under strict test-day regulations (no extra seconds/a minute here and there in a section, no scratch paper, no breaks -even 10 seconds- between sections you wont have on test day, used a bubble sheet, etc.), you should not make any major changes to your approach this close to test day.
Spending time watching videos that teach a different method than you learned and have been using would be a very bad idea. Just spend the next few days taking the most recent PTs you haven't looked at before under strict simulated test-day conditions (leave home and take them at a library or coffee shop or somewhere), then thoroughly review each after grading it, then relax and do something you like that is stress relieving.
I also suggest not spending time on this site between now and Monday since it is going to be filled with lots of stress producing posts from stressed out test takers, stress is contagious, and you are more likely to perform at your peak if you are relaxed, well rested, and confident.
Good Luck and may the force of good logic be with you!
Thanks for your perspective. Honestly, I appreciate it. I've decided the same -- that there's really no way I could truly absorb Velocity's method this close to test date and, if anything, I could only hurt myself by trying to change things this close to exam date. I'm trying to take some of the general principles we've discussed in this thread and apply them moving forward.
I took another PT today (the four scored sections from October 2008) and scored a 174. Again, I went -1 on LG, so maybe something is finally starting to "click" there. The difficulty of the curve on this one conspired against me -- apparently there were too many "easy" questions, as I went -1/-1 on the two LR sections, -1 on LG and a reasonable -3 on RC and only got a 174.
The remainder of my time from now until test day is going to largely be spent drilling LG, taking timed sections and a couple more PTs and trying to remain as loose and confident mentally as possible heading into Monday.