Anyone ever disassemble a distributor - need help

Since I expected to be doing this often; I drilled and tapped the top of the driveshaft for a small, allen-headed machine screw. Then fabbed a spacer to reduce the end-play to a sane number. No more dicking with that ridiculous lil clip. There were times during the tuning that I would have that top off, three times in 15/20 miles. I learn by doing, and not all the stuff I do is for the better,lol.