I have fabricated an ersatz mount for my transmitter via 4 Barrymounts and some sheet metal I did have two of the larger type thumbscrew front assys. But... the channel I found is off-the-shelf stuff and is a bit too wide and too tall. I don't have either a brake or shear so can't make a nice one. If anyone comes up with a sets of "rails", count me in. I can utilize the other parts I have. My last real mount came from Canada.