901ba Dicor adhesive. Same used to put down edpm roof. It goes on white. when it dries to proper tackiness it turns clear. Put it on both surfaces and let try. NOT like many other contact cements , it is water base, easy to use, and stays flexible. Flexible is what is needed on an RV. $20.00 qt rv suppliers.
2001 dodge 2500 auto, with billet Mojave Green torque converter with 2nd gear lockup mod, raptor 100 fuel transfer pump and gauges. RV275 injectors
94 Alpenlite 27sl with many mods. Master mechanic over 55 years