[GeneBob]

I had another idea on the timing if you are having trouble setting up a timing light. I know it is a pain the first time because there is no mark on the pulley or pointer to go by.
Set the timing using the NuRex wrench and the original style cap, then keep the original style cap in place when you run it and see if that fixes the hesitation. Then you know it is a difference in the two distributor caps.