[clarelaw]

Thanks for all the help. I have been letting her sit for a few days. I'll recheck the firing order this weekend. (Mechanic is my night job) I was extremly careful with the rebuild so I don't think it is something major. I know the SC turn counterclock wise, so it is possible that I switched a few plugs. That could easily explain the rough running and back fire.

A new record - lucky me! 5 bottom studs on one side, four bottom on the other. My machinest said that is the most he has seen. Fortunately, they all broke in the middle and were "fairly" easy to extract. Thanks to Waynes book, I was tuning my valves and caught it in time. No head damage, but the engine was an oily mess when I pulled it out.