You're quite welcome. Wish you were closer, I'd look at it myself. Those 271's have one of the best feedboxes ever made. The wet valves under that front plate of the machine for table travel are very serviceable too. SNI has all the parts and the expertise to help you.
BTW, when I was in field service for Heald, one of my first assignments was to rebuild a group of (7) model 0-CF70's at the New Departure Hyatt bearing plant near you in Sandusky. The machines were only about 2 years old, but being a newly-developed model they didn't have all the bugs out for 24/7 production. Those were the first grinders to use Thompson round bar ways, and they weren't up to the task.
My job there was to do a complete, total teardown of the machines, replace the ways, align it, then get them re-qualified to make the new sealed wheel bearings for GM's Chevy Citation and similar cars. I thought I was well-paid at $7.15 an hour to do this. The UAW guy sweeping the floor behind me was earning $16, and he was the lowest rate in the place.
Everything's gone now. Probably that plant too.