I think electric issues are one of the worst to have, due to the fact they can be intermitent and diffficult to find and resolve and generally in the end costly.
Doesnt help that there is no space for the electrics in any car, never understood why manufactures dont plan these things in better for elec buggies. Especially brushless, the speed controls and motor wires take up so much more room than some of the older brushed systems.
Rant over
Glad I finally broke into the B final, was getting fed up finishing 20th every week (3 weeks in a row, same position).