get your arms yet?
let me know if you need quality hole drilling devices
928 and 572 run 7/8 bolts single shear at the arm, and 3/4 at the PSC clevis
i had to buy fine thread bolts a different size for the 2 on each side that go into the key way, not sure why, but let me know i have a bag of them if needed.
HD cone washers should be made also- i have the right DOM some spin some on the lathe