Got Cub back from machanic, after 4 months. Had had the crank turned, and a new valve put in, (at least thats what I remember). It ran, good, but low. I adjusted the fork and the screw behind the carb, it ran faster, but would quit, over and over. Im afraid to fool with a Cub carb. Ive worked on F 20s and 30s, but im afraid of the Cub. THERE, I admitted it. Anyway, I also noticed that the lift wouldnt. I used small pipe wrench, and it had tension, but wouldnt move on its on. Is the lift tied to the engine,and if so, what needsa to be done? The lift worked fine when it left here,