Im going to list what happened with mine in another post. Mine would run great...then it would be all over the place. I had completely rewired it and thought I had screwed something up. Put in a new coil and condenser....you know what? When I originally took off the distributor....it was in the dark. I had forgotten that I felt a piece go flying...but wasn't sure cause it was in the dark. I figured the new rotor would have everything I needed. Anyway, I rebuild carb three times, tried to enrich/lean as according to procedure, but I couldn't get it to run consistently especially with throttle changes.....went to buy another condenser and points, talked to the local tractor guy about my problem....also had weird brass shavings sitting on dust cover...(Soundguy probably already knows what the problem is). The shavings bewildered him, I told him the rotor seemed "Awfully loose and had a lot of play in it" but he said "you did put the rotor block back on?" I said "the what"....he reaches into a bin and hands me a 2cent clip. Told me that was the problem and to go in peace. Sure enough, there was no block underneath...and by this time the new rotor had cracked and had worn down the contacts on the new diet cap I had put on. Replaced rotor (with block) cap and she purred like a kitten once I tuned the carb. Geez that was a lot of work.