That Jones Drive mandrel pulley stuff looks like it ended up pretty nice

I just used one of those E brock Water pumps recently for 1st time as well & they are by far nicest mechanical out there, now that the MP Nascar unit is gone. Looks good.....

Any debris left in engine has to go through filter to get to bearings. & Knowing Ron, I highly doubt there really was any debris he missed, I think he just said that in case there was one tiny little sliver etc that somehow escaped his eyesight. I've done the grind for P rod clearance with head on motor before in a bind time wise etc before & never had it be an issue, with proper care/cleanliness when grinding.