tooling-gel coat ate through the clear paint and primer underneath so my question is which paint can I use that won't be eaten by-tooling-Gelcoat? help

I assume they are rattle can sprays?  You may still have problems as most 2k sprays are still solvent laden.

2k through a professional spray gun is the way to go ideally if you use paints.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant