I'm about to turn 90 and am currently specced for most TPs as opposed to perfect stats. This was a conscious decision early on and now I'm wondering when the best time to fixstat would be so looking for feedback. I'd balance out some lower end stats while dropping a couple of points out of my primaries, which won't really be a big deal. Questions:

1. When's the best time? Should I wait until cap or is now a good time?
2. What happens to my used TPs? I'm concerned that I'll have a TP deficit when I fixstat and I'm unsure how this effects my existing training.