Originally Posted by projectman69
How exactly would you accurately shave off 3/32" from the retainer if I were to keep the stock retainers?
You would take them to a machine shop that has a blanchard grinder or surface grinder. The table is magnetic to hold the retainers down to the pad and a fellow would add a "fence" of steel bars around the retainers to prevent them being ejected under the force of being cut with the stone. Here are pics of blanchard grinders...
And here are pics of surface grinders...