2 questions

1.)I'm designing a custom spacer to take up one slot in the double DIM radio space on the 05 rex. I tried working with bondo...i lacked the talent to make it work. I tried fiberglass...got resin in my eye... anyone know of any materials to work with?

2.)I read that the radio bezel just pops out...so I tried to pop it out only to realize that it's not gonna work since it's screwed down at bottom. I did some damage to the bezel before I made this discovery and would like to know if there are any good rubbing compounds or something that would smooth out the corners on the plastic?