Ok, I have come to an emergency stop on my ABA conversions, if the tether works so only one CC is needed and tether between the 3 units, I will retrofit tethers and remove the CC's in the trailing units.
I feel like many here, overwhelmed and undereducated. I had a good handle on MU with CC in every unit, but once I watched Pete's video on his K-Line ABA E-8 with one Commander, it is definitely the cost effective way to go, the added benefit, I now have 6 extra CC and can convert more of my conventional fleet.
Ron, I hope to try out my UP ABAs next week on the club layout pulling a load. I will have more info a week from now. I would hold off until I know if this experiment will actually work in practice.