well today i took out the dist. and moved it over a tooth. this didn't help when the timing was set it ran rough and i couldn't twist dist. enough to advance it enough for it to run smooth.i guess i should try the valve adjustment. about a year ago i did the adjustment when i switched heads.i think it was 1 full turn past zero lash of push rod when the rotor is pointing at that plug wire.i may also check the balancer too. other than that i'm not sure it may be something simple i just haven't thought of. thanks for all your posts. hoggyrubber