mxz7000 is my cousin so I'll chime in here.
We disengaged the hubs before we towed it. Unfortunately we've had to do this before in the past. The tow bar we had fabricated worked well in the past but we had a steep hill to go down and the free-wheeling groomer pushed the towing groomer (at a slight angle since we can't steer it) and folded the tow bar like a pretzel. Of course it then ran into the back of the towing groomer! The sounds of the tracks hitting each other as the groomers collided was pleasant. We were using another BR180 to tow with.
We're located in Lake George, NY. We're not sure what is wrong but the groomer suddenly turned to the right and stopped. Now it won't go forward or reverse. Everything seems fine, nothings leaking. We think its a safety or something with the steering. We ran through the computer diagnostics by holding down the F1 button and starting the machine, turned the trim pot all the way left and right, same thing with the steering wheel. The code for the steering wheel did not clear, so we think its something with that. We've had lots of trouble with the steering on this particular machine. The manufacturer's rep is coming Friday to look at the machine (for other reasons) so hopefully he can figure it out.
We were sort of hoping someone had figured out how to fabricate the ideal tow bar.
Thanks for the replies!