I feel your pain. I have been trying to get mine started for the last six months after rebuild. I had way to many hands in mine. I am by know means and expert, just had a lot odf suggestions from this board. My problems: Plug wire switched on 4 and 6. Vaccum line open under the wiper area. I reset the timing myself after letting others do it. Also, I had tried to crank so much, I was a quart high with fuel. Bottom line, changed oil, quadruple checked wires, vaccum hoses and rest timing. It Lives.