I've been doing a little bit of searching throughout the forum but with little luck on the matter. I've just casted two lids from my scratchbuild, so my question is this: Does anyone have their own recommendation(s) when it comes to strengthening their buckets? Would applying fiberglass (if it can adhere) or even Bondo on the inside help any? The main things I'm concerned with are possible warping/losing shape or cracking the paint if the lid is flexed. Any suggestions?