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Setting Stall on TMCC matching Diesels to synchronize Motors

I own two Lionel TMCC equipped, dual Pullmor motored Canadian Pacific F3 engines.  The first is the powered 'A' unit from CP set 6-21759 (1999) and the other is the matching powered 'B' unit 6-14564 released in 2002.  The problem is that from Day 1 the motors of the two units are out of sync, such that the 'A' is literally dragging the "B' unit. 

Neither engine has the Odyssey speed control and since I always run in Command mode I assigned each of them with an ID of #1. Also, I operate with a CAB-1 - not CAB-2.

In an attempt to resolve the 'out of sync' problem I tried altering the Momentum by setting one engine at 'High' and the other at 'Low', but that didn't correct the problem.

Recently someone told me I should try using TMCC's 'Stall' feature. As a result, my question is whether Stall will resolve the incompatibility issue.  If so, I'd also appreciate a step-by-step process of how I do it.   

Ideally I'd like to be able to run the ABBA consist together with the eight (8) matching aluminum passenger cars.

Lastly, if setting different Stall voltages for each engine is the solution, would I have to reset it each time I run the engines or is it retained in memory?   

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