Had to replace some stick on raised emblems on a ranger boat last year. Specifically the R and A of ranger. Anyway it's not quite flat at the beginning of the R and that edge has raised up off the surface. I tried some gorilla glue as suggested before and it didn't work. I'm considering replacing the letters again as those two letters the upper side is starting to pull back a bit. Any suggestions on how to maybe prep better. I used alcohol last time on the fiberglass to make sure it was clean and it was dry before placing them on. Temp was prob in the 80's-90's. TIA