Jeebus, it won't rev up and now will only idle for about a minute. It gets boggy from 1/2 throttle up and puts the smoke cloud down. I have new points, new coil, new ignition(key), the exhaust is not plugged, I have put the needle in every position possible, tried every increment on the fuel screw. The rotary valve looks ok, but that doesn't mean anything because I don't know what its supposed to look like. Since its none of those, it must be that the schewgner valve being installed in the counter-clockwise plane.