Not sure about the hand clutch, there was a forest of levers, and I only drove if for a little bit, I do like synthetic oils but I'm too cheap to buy em, used to work as a mechanic at an indoor go kart track, all we used was synthetic, and most of the time the chain would take off the rear oil lid and you would end up running without oil for 2 weeks, those motors ran hard with no governors for 4 years before the first one blew up, with no oil in it.
How often do you guys change the oil in these things anyway?
Anyway all good stuff, and keep it coming, now if I can find really cheap tires...