Agree with last post. I would put money on a fix being to use extremely light coats. Barely enough to cover and move on. The cure happens fast so you run a very low risk of the solvent reacting with old paint. With heavier coats the top layer starts to cure and effectively traps the remaining solvent between the old and the top skin of the new (thick) coat. When this happens the trapped solvent has a ton of time to re-activate old paint and that happens unevenly and you get wrinkles.

Most every problem I have ever had when painting was because I put it down to thick. There are of course other ways to screw this up (I know because I have done it) but I would guess it’s just too thick. You really don’t want any more paint than required to yield a solid color- in fact the factory coats on these games were so thin you could see through them- so it will actually look better (if better is more original) if done very very lightly.