Thanks for the replies. I think I'll weld it and re-drill it. If I drilled it out and bushed it the center would probably be off to the side that is worn. I am going to guess that it is worn to the rear and either plug it and re-drill or just weld the back side of the hole and re-drill. You can't believe how much the geometry changes when moving within the limits of that hole. I'm trying to get this plow set up for a plow day, and am while setting it up as the Brinly manual suggests, I'm not even close to it working correctly.
Thanks, Gary