Originally Posted by cbad335
+1 Make sure the clear on the respray has the flex additive. That is necessary on the plastic/poly bits. Sounds like your clear is missing that.
This is definitely the cause...plastic bumpers need flex agent so the paint will move with the plastic when it gets cold or hot......
My understanding is that the flex agent gets mixed with each coat of paint/clear....
the bumper will have to be stripped to get all that old stuff off, then it can be repainted.