@Britmog- Hi Bruce. I want to thank you for weighing in here with your experience. In the relatively short time that I did a deep dive on the three wheeler, I've learned an enormous amount and don't really consider myself adept, mechanically. I just got off the phone with Phil Bleazey about his upgrades to the Centa drive and see what you mean about "learning how things work." I'll still need help-- machinist type things-- but I can appreciate the satisfaction of getting it right. You have several of these interesting vehicles-are the more conventional 4 wheeled conveyances less trouble/more straightforward to work on? There is something about the three wheeler that just rings my bell.