and make sure your centre CVDs are well built, else (like me) they might come loose, and drop a metal part under your ESC, shorting it out :
http://www.team-durango.com/blog/?p=44
oh, and build your diffs / input shafts correctly :
http://www.team-durango.com/blog/?cat=3&paged=2
Plenty more good info on the TD website.