Had an email back from Brian. He didn't even offer to sell me anything! I emailed him back asking about that.
Interesting comment about the raymarine drive units. I did not realize they sere so troublesome. The TP uses a belt drive which maybe is better like the 1000 and 2000 but I think the ball screw is heavier in the TP30s than in the RM2000.
I could always try to get an X5 and drive the TP motor with that, but I think the pelagic setup will be more reasonable.
Also the end ball joint is getting noticeable worn. Has anyone replaced that with something like a metal tiller extension joint?