SO! Re-painting my BKBT bucket...used some paint stripper my dad's been raving about...leave it on for 20mins, it changes colors, you take it off. Cool, the container doesn't say don't use on fiberglass, says it's safe for wood, textured walls, metal, etc. I proceed to apply and wait. Come back and in places where it ran down, it ate away the fiberglass. Fun. So pretty much all of the edges of my bucket...along the visor lip, around the ear-pieces are all spalled down. I want to fill these in and sand it back down...and I'm too new to know what to fill it with....any tips?