Ok, I think I get it now on the reversing transistors, just to be able to use the boards I already have. Got sidetracked yesterday, company came over...so I only got drawing revisions started, finished up today. This is the schematic for new PCBs with the jumpers to switch between CA & CC modes. I also changed the RYG & C wiring around as you suggested, good idea and I like that better too.
I think I have everything correct, including the wiring to the header pins. But, I think my jumper placement instructions are somewhat confusing? I was trying to make the jumpers for each mode the same on both headers to simplify things. In trying to eliminate confusion, I may have made it more complicated? I've looked at this a few times and sometimes it makes sense, sometimes not so much? Words of wisdom from the much wiser would be helpful here. 
Telling me I have it all wrong is ok (and appreciated) too... 
The PCBs are very nice and the transistor PCBs work just fine, but there are a couple of small glitches in the PCB layout and component spacing. I am not good at that just yet. I crowded the wire terminals a bit and the terminals covered up all the "what wire goes where" writing on the PCB, oops. Some PCB enlargement is in order for the next batch, if the writing is to be seen. JLCPCB allows up to 100mm x 100mm at their $2 for 5 PCBs rate before the price goes up. That allows some wiggle room. (Definitely won't be fitting in any O gauge engines like GRJ's stuff does though.)
I haven't yet gotten to bread boarding or assembling a PCB with using the MOSFETs, but I will be following your advice and NOT trying the CA/CC switching jumpers on that one. I don't want to end up in any rabbit holes and it's probably too complicated for me to stay out of them. Thanks for the warning before I did get any hair brained ideas about trying that.
Thanks again for all your help Stan!
