Frustration has begun to set in. I received a new short block (20-522-15) in the mail the other day. Put everything back on from my original engine per maintenance manual. It starts and runs fine, but it spits gas out of the carb, and when I give it full throttle, it seems like it is spinning at a million rpm's. I have set the governor, throttle linkage, like the manual said: governor shaft all the way counter-clockwise, and throttle arm in the wide open position. I adjusted the valves at TDC, on the compression stroke at .005 on suction, and .007 on exhaust. Not sure if this matters, but I did cut the coil wires to remove, then re-attached when I put the engine back together. I received a new carb with the short block, but I have tried both carbs, and they both spit gas. My hands are in the air at this point, cause I have no clue what else to do??? Next step would be a repairman. Any help, or steps in the right direction would be greatly appreciated. Thanks for looking.