Note of caution on the Zuke: friend mounted one up several years ago, about a 14 or 15. Ran it two or three trips to the hill with his new TS kit. Then one cold morning ( 15 degrees ), we fired up and headed up the trail. The guys Zuke, locked up. We messed with it, it seemed to loosen up, started it and ran all day no issue. Next day same deal, but when it locked up it was solid.
The explanation when we tore it apart, some of the Zukes had really fine fine oil screens, that in cold weather wouldn't let much or any oil flow and its in the bottom of the case, main oil pickup if I recall. Engine was near total junk. 3 years later its still in the corner, needs crank, barrel , cases.........etc etc.
Check that out. At the time we found quite a few posts about this issue and Zuke changed it later on If I recall ?