Am still having trouble with this motor. I thought I had solved it when I found a bad head gasket. Compression is now at 100lbs on both cyl.,I can get a spark to jump 7/16". After I get it started ,it runs good,idles good ,after it and runs awhile I can cut it off and it will start right back up but if I wait 30 min. its like starting all over with lots of pulls and choke.I have checked the carb for leaks by spraying carb cleaner all around the top plate . please help!