Yea, I am not going to try the rear mod until I have a few extra sets to play around with. I was already hurting for Yokomo parts on Saturday, when I stopped running the Worlds car 6 months ago I dumped off a lot of my extra stuff.
The capacitor thing was weird, I had never seen anything like it. We had a good amount of debris on the carpet at the time though, so I'm thinking that something like a staple, screw or small bit of conductive material got inside the chassis and shorted out the capacitor. That's really the only thing I could think of.
I love racing at big races. Every time I do it, it just reminds me of how much I have yet to learn and do in this hobby.