The problem lies in the fact that little will properly adhere to any surface that has silicone residue remaining. There is a commercial product that will remove silicone residue, it's spendy though. Dicor lap sealant, non-sagging, should work_if you can remove the silicone residue. Silicone has it's uses, but not around RV's.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"