Trying to do a door lock actuator in a 89 5.0 LX. It's pretty straight forward, but my only question is that the new rivet that I got from latemodelrestoration.com doesn't seem to fit inside the bracket of the new lock actuator. The end of the rivet is a little mushroomed and it's just a little bit too big. Am I missing something? Is it just that I need to hammer the rivet in there some before using the rivet gun or does the hole in the bracket need to be drilled out a bit?