I am starting to kit-bash Tichy flats into early circus loading tofc. Most pictures of models have a brake wheel sticking up about 4 feet in the way of the truck driving across the ramps. I am having a hard time finding pictures of a converted flat or box car that had the brake wheel relocated somewhere. Also on some newer  89 foot cars there is a post on the side,near one end, that has the chain connected to it but no wheel. Is that some sort of lever that actuates the parking brake linkage?

I am posting here because I can't get a response from TCS via email.   Perhaps shaming them on MRH will prompt a response.  I purchased a WiThrottle in October 2019 at the NMRA-MER convention in King of Prussia, PA.   I knew then the throttle didn't exist as a saleable product at the time and would be shipper later in the year. 

Find it interesting to watch how other people do things,  I would not do it this way but as you say it is his model railroad.

Hope this works as a training aid for others on the Don'ts and Do Nots

One thing I don't remember being discussed, but is not very important. Certainly not to me.
The DCS50 and many other command stations all do a simple loco number change. You put the loco on the programming track; in "PAGE" or "dir" mode and you click "LOCO", and again or such until you get Ad4/usually. You then enter your 4 digit loco number/usually. You then click "LOCO" again. And you are basically done.