.....misery loves company. When mine sheared I looked at using a 3/16 roll pin however it was decided that it would weaken the dist shaft. I replaced the high volume
oil pump with a standard. Mallory has been making distributors for quite some time using 1/8 roll pins as do many manufacturers.... most problems seem to be related the the high volume pumps. I'm curious if they, along with using a 3/16 hole, designed a more robust shaft to support it.