It was at the old "Weaver Scope Repair" service in Texas. (I'm having a 'senior' moment, but I recall that was their title, or something close.) It was run by a couple of old Weaver employees who had bought up a pile of parts and tools when the company folded its tent and moved operations to Japan. They have since closed shop, and if I'm not mistaken Ironsight Inc. took over what was left of their stuff. Somebody feel free to correct me if my memory is off.
I had four scopes done back in the early-mid 2000's, for a cost of $75 each. That, added to the $25-30 I paid for those junkers at shows and flea markets, brought them up to around their fair market value. Those guys disassembled them, cleaned them, in one instance supplied nice replacement lenses for a 1946-vintage K2.5, recoated the optics, replaced seals, and prettied up the exteriors- all in all a good deal for $75.
