Please elaborate. Was this measured in an axis that is not in the same plane as the valve stem? If so, then yes, there would be disparities.
I was measuring the crank angle at max lift on intake #1. My dial indicator was at a slight angle but i was only looking for the crank angle at max lift.
I've measured this at both 0.040" mill and ~0.100" mill and it is extremely close to 1 degree per 0.010". Also, the math backs it up.
This could be due to the IPD cam gear problems you suggested.