One of the capacitors is a 10uF/35uF 370V motor run capacitor, with 3
terminals. Where's the cheapest place to buy replacement motor
capacitors?
I guess you see where I get my cheapskateness (at least I came by it
honestly, LOL)

You need to go to either a motor shop or a HVAC supply house (like a
Johnstone Supply).
Johnstone lists the one you need in their catalog (G32-338) for $19.10.