471 Big Block high rpm problems

I will probably try some tuning but with current settings it seems to really run well.
When hot the starter sometimes has hard time to turn it on the initial turn. I have mini starter in it.
What about advance curve? At what rpm should I have full advance? As far as I remember it is all in at around 2500rpm.

If that's the case it's probably close to ideal then, advance curve should be OK too. Has your idle vacuum increased since you fixed up the carb?