Minor update, our local track was closed this weekend for the holiday so I did my first major once over on the Truggy (and buggy) I noticed something which I should have seen a long time ago, the small plastic top which goes on the center diff rubs on both the truggy and buggy, against the plastic spur. The plastic spur has already caused problems for many people because it also rubs against the diff mount itself but the rubbing against the diff top part is an easy fix. I could see where it was rubbing and I just took a sanding wheel on my dremmel and sanded it right off. Not sure how much of a difference it will make now (because the friction had pretty much already did the job) but every little bit helps - and I know if I ever need a new one of those, I'll need to grind them down before I use them. I should have taken a photo but I was too focused on the wrenching.