PVA lift from plug

I spray PVA over the plug and wait untill it’s completely dry then I lightly brush on gel coat then waited untill B stage, then when I came back and trying to brush another light layer of gelcoat the first coat of gel coat was lifted all over my plug and seens like PVA didn’t stick on the plug. Anyone experience of what happened to me? What cause this to happen?

BTW how did you guys clean spray gun after spray the gel coat?

you put the gelcoat on too thin…its called alligatoring and it basicaly ripped itself off the part/mold.

Acetone is what you use to clean almost any parts or tools BEFORE THE RESIN CURES