Well, after all this time I finally had my first issue with the Nemesis. I was at the track and the engine was runnig at 300. The headbolts came loose and when I went to tighten them I also noticed the pinion for 2nd gear was missing...ooops. Now I think that the engine sucked in some dirt because it seems like it's lacking compression. I ordered the pinion from Headrush hobbies and the shims for CEN Racing direct. I will slap it back together and find out if I need to replace the piston and sleeve. Not bad for a year and half old truck. The Nemesis has been put through major abuse and comes back begging for more.