Hey guys, I bought a fine looking tent trailer for camping. The previous owner tried repairing some holes in the plastic roof with a fibre glass repair kit but decided to do it drunk and made a mess of everything. I patched up most of the holes myself after removing his attempt of repairing them. I found that cleaning up the mess he made on larger holes is too much work and too much time that I don't have. I plan on using body filler to smooth out his fibre work and I will be primering/painting afterwards. Is there anything I need to know about resin-filler-primer adhesion or anything?