Oarlocks

We purchased some great horned oarlocks from Duck Works.
duckworksbbs.com
They are beautiful bronze castings and at 17.45 bucks a pair, awesome.
The old oarlock sockets we found in Oriental, NC. are slightly oversized, too small for a 5/8 ths inch shaft oar lock, but a little loose for standard 1/2 inch.
The easiest solution was to pull out the hard stick silver solder and the torch.
This solder is about 10% silver and requires a fairly high heat.  It is not the stuff you find at the hardware store.  It can be found at professional plumber's supply.  HVAC guys use it as well.
I used the oxy/acetylene torch to get the bronze close to red hot then the silver flows onto it without any flux needed.
Once the shaft had what looked like enough material and cooled off,  we used the bench grinder and wire wheel to make the rough places plane.
Now the locks have a close tolerance and will make for more pleasant rowing.