Recently did a little maintenance on the 2 wheeled tractor. Swapped my rear tire over to a Shinko 805 from the 705 I had run for years, also went through the carb since I was having a stutter issue at speed & under load. Stayed with the stock jetting, did the $.22 mod, but didn't drill the slide. The carb has the externally adjustable air needle, so I went 2.5 turns out. I also swapped out the choke cable for the brass number. So far I'm happy with the tire choice(still considering swapping out to the 21" front tire), the carb work was much needed too. Between the air screw & shimming the needle, I no longer have the popping & such on decel & it feels(by the butt dyno) to be much more linear with the few precious HP that it makes. Now to get off my a$$ and get my other bodywork scuffed,primed & painted!