Are the #1 & #2 cylinders the ones that leaked down?
If not, it sounds like you you have an electrical problem. First, inspect your distributor cap. Look for burnt or corroded contacts, and look for cracks. If you have another cap on the shelf, I would try it. Another old trick is to do a "dark" test. At night and in the dark, run the engine and look for arcing. If you see arcs from the wire boot to the head or plug, you have a plug with a broken electrode. Arcing between wires is usually crossfiring due to improper wire routing.
