[Purdy Swoft]

My guess is that you are using the so called modern points and condenser setup. the modern style condensers give lots of trouble. If this is the case, I would change back to the original setup. most good model A parts houses handle the short proof A&L reproduction original style condenser. I can see no advantage to the modern setup, most use the cheapest, made in China condenser and the points are a real pain to adjust. Usually a bad condenser or coil will start to act up after warm up or at the least little strain. If the coil gets real hot when it starts acting up, have it tested or replace.