I have a 69 Charger HP 383 cu.in. finishing up total restoration. I installed a flame thrower II electronic distributor and coil for added performance. Motor ran fine for 111 miles. Put the car in the garage for the winter and went to start it a few weeks ago and would not start. Getting fuel but no spark. PerTronix sent me some info on troubleshooting the unit and it tested good for grounds and voltage. Still no spark. Any suggestions?