I did the same thing you did on the bottom shock mounting screws. It seems like I remember someone else having that issue with one of the first MegaPs, and I read what they did and did it myself. I have not had the issue with the front hubs. I have used [link=http://www.plastidip.com/home_solutions/Liquid_Tape_-_Electrical_Insulation]liquid electrical tape[/link] successfully based on other threads I have read