When doing the bodywork on the coupe I had to use the weatherstripping that was provided by the kit. Mounting it where it is supposed to go is the only way you can make sure that the gaps/fitment is correct as it puts some mild stress on the bodywork. Now that I've done so there is not enough left to put on when the paint is done. Is the best buy purchasing more from F5 or someplace like Mcmaster-Carr? Thanks for the help, as always.