Originally Posted by bigmurph
If you watch the BAL videos online, John is the guy in those videos. He told me the part number I got was not something a dealer would know about. That is why they would have to call them. Let me know if you still have problems and I'll look back through my emails and try to find who else I contacted.
I was able to call BAL and get his phone number. For mine, and for anyone else in the future searching for the same, he said the part number for the system I have is actually 23925. This is a 25" C-Jack ready to work in the 21100005. He said that the reason the 23225 won't work is that the end of the threaded rod is not in the shape necessary for the coupler to slide on to it and so while it would work as a manual option, I'd never be able to connect it to the 12V motor. He mentioned that eventually they will make this change to the threaded rod for the 23225, but they're not there now.
Thanks for all your help BigMurph! You got me exactly what I needed to figure this all out!