1969 Super Bee starting issues

I recently installed the Mopar Performnce electronic conversion ignition system (orange ECU) on my 1969 Super Bee replacing the original points system. For the first start of the day the car starts with no problems, same for maybe second and third start. Then out of no where, I try and start the car and it turns over and over, but no start. Try again multiple times and the car is now completely dead, no sounds whatsoever. Try again and the car tries and tries and finally starts. The battery is fully charged and in good shape. Not sure the condition of the starter or age of starter.

Never had this issue with the old points system. Is the electronic ignition draining the system too much? Thoughts on other areas to trouble shoot.
Author: 440beep