The manufacturer of your new paint will usually tell you whether it's compatible over your older paint. I would pick a new paint and email the manufacturer to see if it's compatible over your old.
I switched from an ablative to a hard paint and ended up sanding the old off. It was worth the cost (peace of mind) which was about the same as my new paint.
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
by The Pointer Sisters