Seems like the primer would seal off anything from the plastic getting to the lacquer.
I once had a problem with MCW paint. It wrinkled up something awful. I stripped it,
cleaned the body really good, used the same primer, and the same paint.
(I'm a sucker for punishment.)
The second spray down went well, and it's in the display, now.
That was over ten years ago. Still looks good.
Before I abandoned this project, I'd strip the paint and reshoot it, again.