Help, my 53 SA is giving me fits. When it got hard starting last winter I bought new plugs, solid wires, copper contact cap and a points,condensor and rotor and replaced the old ones. 2 of the plugs had the electrodes almost gone so I felt good about tuning it up. Well it sounds bad because of intermittent missing. It starts good but does not run smooth all the time. So I readjusted the points, changed the condensor back and forth, and everytime I was in there the miss seemed different. So I pulled the Carter carb off and pulled the the jets and cleaned it and no change. The carb wasn't that bad. I was going to try the timing but can't seem to loosen the bolt next to the block that would allow me to rotate the distributor. Also sprayed ether around the manifold while it was running with no change. Any ideas? Snow is coming and she gets a workout...Thanks....Fred