Read the labels first. I was originally thinking silicone, but don't think it ever hardens. A 2-part epoxy will harden and then you can give it a light sanding IF it's compatible with the plastic. DH uses 2-part epoxy for everything with his RC airplanes. They make one that hardens in 2 minutes or less and another more like 5 minutes. Good luck, that is a bummer.
Trailerless but still have the spirit
2013 Rockwood Ultra Lite 2604 - new family
2007 Rockwood ROO HTT - new family
2003 Ford F-150
4 doggies - We support Adopt/Rescue.
Sam, you were the best!
Cubbie, Foxy, Biscuit and Lily - all rescues!