I have for the most part finished my Rustler and the TT-01 (both need minimal $ for stuff that needs to be changed). Now it's time to get working on my xxx-t. I should win a chassis on ebay for it because my old one is broken. Then rebuild the shocks. But I've always had problems with the diff. My question is what do you guys do to your diff to handle BL power. I'm currently running a XXX-NT setup but may switch back to the xxx-t spring setup.