DPowell: I think you're talking about the big square-shaped diode on the GT7, right? I also had trouble with it, not in my 12th scale but in my sedan. The sedan has very little electronics room, and the diode was getting in the way. I talked to a Novak driver and asked whether it was necessary because he wasn't using one. He said it was not, especially in stock or 19T, so I ditched it too. I've run without the diode for a month or two with no problems. It may void the warranty, though, I'm not sure. If you do decide to use it, though, Novak sells wires with the diode built in (no soldering ) so you can switch out everthing and not mess with soldering the diode back into line.