Today I set the points because my dwell was reading over 50 deg. I started with .016 feeler gauge which brought the dwell down to about 40 deg and idling rough, so I opened the point some more and finally got it at 30 deg and was running okay in ballpark manners. I hook up the timing light and tried setting it to the BB mark on the pointer and everytime I got it lined up it would jump up and down around the pointer and I could hear and feel the engine stumping then it perks back to the BB mark and idles good and then jumps around the needle again. I cleaned up all my spark plugs and gapped them .035 Anyone have a clue whats going on? Do I need to work on my points some more or take the dist. out and start from there?