Dear Banquo, Bill will replace your caps as requested, but he will also assess the servo mechanism and hunt down and replace any transistors or other parts that are not performing up to snuff. He will also adjust the critical DC voltages and calibrate the speeds. I will predict that the cost can range from about $400 to $800, the latter near to what I paid for him to do my Mk3, (MK3 may require much more work and calibration than Mk2, so I expect closer to $400 for Mk2.)
Re the physics of the tonearm/cartridge. It's not so complicated. Ideally, you want the only motion in the system to be the motion of the stylus in the groove. Any other relative movement downstream from the stylus can either obscure detail or create spurious signals that the preamp will reproduce and amplify faithfully. Thus producing distortion. This is how I see it, anyway.
Re the physics of the tonearm/cartridge. It's not so complicated. Ideally, you want the only motion in the system to be the motion of the stylus in the groove. Any other relative movement downstream from the stylus can either obscure detail or create spurious signals that the preamp will reproduce and amplify faithfully. Thus producing distortion. This is how I see it, anyway.