I have a XK-140 that has been sitting in the garage for about 20 years. When parked, it was running just fine. I have decided it's time to get the car off blocks and running again. It turns over just fine however I can't seem to get spark to the spark plugs. Tested the high and low sides of coil and that appears fine. Testing coil by manually opening points with coil wire near block provides a good spark. Points open/close fine. My guess is that I'm getting spark to the distributor cap but nothing to the plugs. Any thoughts on what I may be missing? Mac