I did it myself. It needed new rods, so I took it apart, reassembled, trued, and had a coworker tig it for me. The cam I rephased myself as well. I did it for the sound and to see if I could.
To me, that's VERY interesting.I like to see the whirly bits chucked up in the lathe/mill, being sliced and diced. I came very late to the game when a new-found friend who is a custom knifemaker opened his shop to me. He also builds amazing custom belt grinders, and has a selection of 5 different models that each do a very specific job, 2 of which are extremely adjustable. Add to that a large lathe that can accommodate rifle barrel building, no less than 3 full-size mills including an antique Bridgeport, two band saws, and both mig & tig welders, and it's a like a slice of heaven. (oh, yes, excellent lighting AND air conditioning)...