Re: changing motor mount angle
PC-7 is a thicker version of JB Weld that comes in 2 small cans. You can get it at Home Depot, I think. It can be packed into the voids and will harden to a sandable surface that won't crumble. I've used it for many applications and swear by it. It's kind of goopy and messy but not runny like JB Weld.