I am having carb problems with this machine. I think most of it is the bottom screw that I believe adjusts the float level diaphram. Can anybody tell me how many turns out it should be or how to adjust it? Also may be having a wiring problem for the coils. Not sure what wires to power the coils. Its a basket case sled!!! No ignition switch many parts missing. Got good compression and cleaned the carbs. Runs for a few seconds maybe 20 then quits and seems to be flooded. HELP!!!!!!!