ehh I found some bad junctions, but going at it with xtra coarse mequries followed my light cut followed by polish made it look alright, but it had alot of dents and divets and stuff so I did not go crazy like on my car.
Otherwise it works good, the resistance dropped from 0.450 ohm with it zeroed on the multimeter to like 0.08 without zeroing the leads. I used probobly 60 q tips, 3 3 inch polishing sponges, 8 dremel buffs, 3 microfiber towels. I hope I can recover the polishing sponges with the washing machine, some seriously greasy shit came off (maybe tobbaco). I will apply deoxit grease on top (just used red spray for now after cleaning with q tip alcohol, tarnx then wiping with a microfiber towel) later, when its ready to be put back together.
I need to restore a handful of rusty screw heads that attach the knob to the shaft, restore the front contacts (still did not clean those, only the knob that goes on top was polished, so the resistance might yet drop a little, maybe that deoxit will work a little magic over the next day too).
I repaired one bad solder joint (the low range resistance wire popped off the joint), hopefully the other failures are also bad solder joints and not fried components). The brass shafts I polished and coated with automotive ceramic wax.
Wow, I must have bought this in 2015.
that resistance drop is wonderful though, 1/2 an ohm is terrible, now its like 30 miliohms. Maybe when its done I will put in some lugs and kelvin connect it to measure it.
All that late night youtube playlist restoration watching sure paid off.