My Street Demon install experience

I'd like to see more initial and I have no idea what you have for total, because you stopped at 2500. Unless that's where the advance stopped.

Also, if you get the timing curve corrected you'll likely see more heat in the plug. So I'd work on the distributor first and work from there.

5 intial is way too late for most anything, unless you a are working with an emissions ideal.