This is how I did it.
1. Pry the reluctor off the advance shaft.
2. Unscrew the two screws holding the cover plate on and remove it
3. remove the advance springs
4. remove felt pad under the rotor
5. remove the retaining clip under the felt pad
6. slide the advance shaft off the main shaft
7. remove the distributor drive gear and pull the distributor shaft out
8. Secure the advance shaft and plate in a vise and drill a hole large enough for a 10-32 screw. (This plate is hardened and I couldn't drill it with a standard bit. I used a carbide tipped drill bit for drilling glass.)
9. Put the advance shaft back on the distributor shaft and use that as a guide to drill the hole into the drive plate. (Use a 5/32 bit for drilling this hole so it can be tapped with a 10-32 tap. A regular drill bit will work for this.)
10. Tap the hole you drilled in the drive plate with a 10/32 tap.
11. Screw the drive plate and advance plate together with a 10-32 screw, and cut off the excess sticking out of the drive plate. (Leave about a fingernails thickness sticking through to peen over and retain the screw)
12. Peen the shaft of the screw sticking out of the drive plate to make sure the screw doesn't back out.
13. Re-assemble your distributor.
14. Once your distributor is locked out, you will need to phase the pickup to the distributor cap so that when the MegaSquit fires the spark,the rotor is pointing at the appropriate tower.
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