I have given up trying to match speeds of 2 transfer tables. I tried diodes, variable resistors, pots, and an AMC. All failed. I now have both controlers mounted side by side. When the faster table starts to pull ahead, I release the travel switch for that table for a couple of seconds and then proceed. doesn't really take much practice. I have the red leads from both tables tied together so pressing either table track button powers both tracks. I have installed the AVC I bought years ago to power the tables and all 8 table stub sidings. Each siding gets power thru a single pole double throw center off toggle switch I have the AVC programmed as track 4. ( My 3 TPCs are tracks 1,2,and3. ) Because different conventional engines require significantly different voltages to move at a reasonable and constant speed across the tables and onto or off of a siding, the avc is not programed for a preset voltage. Calling up track 4 makes18 volts from a zw available. I turn up the voltage with the cab1 to get what I want. I usually use 15 volts to move the tables. I than drop the voltage to 12 or so and turn on the toggle for the siding I am moving an engine from to the table or from the table to that siding. I than increase the voltage to a good level for that engine. The upside 0f the system is I have very accurate control of the engine from siding, across table, and onto siding or mainline connector. The down side is I have to use the toggle to cycle the e-unit. Of course, these directions only apply to conventional engines. With TMCC engines,
I dial up full power and control all engine movement with the Cab1.
I'm sorry this got so lengthy, but I wanted everyone who tried to help me to know that I appreciate all the advice, and that I have developed a workable solution.