i just painted a 1988 iroc vert about 3 months ago looked pretty nice i would have gave it a 8or9 i wet sanded it with 1200 & 1500 buffed it up then a couple of weeks went by i started to see sand scratches & rings around the spots that were feathered it was shirnking i waited 4 or 5 weeks and DA sanded with 1200 & 1500 buffed it again looked awesome a few days later it looks like it's still shrinking with all kinds of little specks what has happened

 

more info please...what primer...how was it prepped...what paint...what condition was the orig. finish in?

 

yeah that's odd everything should have cured by 2 months for sure.

 

THE CAR HAD A VERY BAD BASE CLEAR PANT JOB I BLOCK SANDED MOST OF THE CAR WITH 180 & 320 USED NASON URETHANE PRIMER,DP 80 OR 90 DON'T REMEMBER # DUPONT BASE COLOR BLACK,THE CLEAR WAS UPOL, I NEVER USED UPOL BEFORE BUT A FRIEND SAID HE NEVER HAD A PROBLEM WITH IT, I JUST DON'T KNOW IF I COULD GET AWAY SANDING WITH 800 & RECLEARING.OR IF IT'S GOT TO BE STRIPED

 

Ok, let's discuss the shrink...were the spots that shrank back in areas where you did some bodywork before YOUR paint? If not, were they areas that were shrunken on the old shabby job? I suspect the old poor job is your culprit. Definitely so if you slicked your body work into old paint. That's a huge no no.
Re-reading, I see that it was in feather-edge areas...apparently you did not prime over these breakthroughs? If not, did you seal? THe shrink is probably due to some one skimping on materials on the previous job... Probably lacquer primer under that old finish. If it is, it will continue to move under your paint. (especially under black.)
One more caveat, Never, NEVER mix and match materials. Why didn't you use Nason all the way through? That UPOL clear couldn't have saved you THAT much ca$h.