Thanks guys.
Turbofurball, ok I got you now. Now my second name is much more fun.
Teamferret, thanks, I have been looking at the B120's and as you say lots of parts. I really do want to do a dual ratio TC120 engine. Or KT120 (almost the same). My early TC has a KT and the later one has a TC stamping with bigger airbox and slightly different porting and coils.
Ikb, Now that is great. Just what I am very interested in. Very impressive. Thanks for posting the photos and giving those details of what you have done. I have my eye on a bearcat kt120 frame but it is a bit expensive. I will try and negotiate. Also found a second swinging arm. My word, that crank was bad. My first TC was solid. Had to drill out the piston crown and carefully chisel out the rest. Manage to do it and save the barrel.
Do you mind me picking your brain a bit more.