So, I got a chance to run the B with a timing light and from the best I could see (cast back rims are impossible to see through) it was running around 18-19 degrees. I will be putting the governor gear back to the correct position later this week and reusing the timing light to see where its running again, I did turn the magneto back CCW as far as it would go, which changed the timing to 5 ish? degrees I think, which is exactly what you all said would happen. so if I put the gear back to where it belongs I think the timing will be too far in the other direction(30-40 degrees) so this must mean that my drive cup is wrong, right?