[Licensed to kill]

I just thought of something that may be relevant. While i had everything apart for the rebuild, while doing the dizzy, after stripping it down, I had sandblasted and painted the distributor body (it's a cast iron one) and, IIRC I'm pretty sure I primed the inside of the housing to prevent corrosion. Is it possible that I am not getting an electrical contact somewhere due to the paint?. If so, where is the likely contact failure?.