I’ve never seen one powder coated. We always used rattle cans. So you know that was actually factory..
Sparta, QRK, and Russco all the parts are swap, but the Russco had a better pocket bearing for the platter. It had an endplay and height adjustment.
The Fractional motor had end play adjustment and I added a remote oiler on a couple I did. Just depends on how hard it was to access
There were two kinds of platters too. One had a fixed ball the other had a flat surface and the ball was in the pocket, I prefer the latter BUT I’ve also used combos, double balls, bla bla bla.. :-)
I use Rislone for lube (Engine additive)
http://www.hifitown.com/index.php?dispatch=products.view&product_id=30096This is the motor and spindle bearing I use. You can take the motor apart and drop balance or if you know someone spin balance the armature.
The drive pully, you want the one with swappable O-Rings (same manufacture as the ones for Thoren and Lynn)
The chassis isolators I use the red ones and add a silicone bead to one side to stiffen them.. 8.00 each vs 25-35.00 each..
I usually just keep shop notes in Mead, college rule or geometric note books. They are 6-8 200 page note books full of my projects. They are also mixed with all my OTHER projects too over the last 40 years.. tool inventories, and a Hand Written Will with DNR unless statement. :-)
I'll look up some notes..