Yep I get the light flashing on all spark plug wires, but when I peek through the hole at the timing marks, I only see them when the timing light is clipped to number 4, not at all when clipped to number one. Wires 1and 4 are diagonally opposite each other on the distributor cap and I verified tdc by feeling through the spark plug hole when the rotor was pointing at the #1 wire.
I see your point about points and it was maybe a dumb idea to blame the jitter on the rotor. But holy cats it"s jumping around.
Thanks for your help.