Hi Dennis,
There is too much mirror shift on my old u-210 to use the stock focuser when imaging or to bother to motorise it. I replaced the visual back adapter with a custom lower profile one and added a low profile Crayford focuser and motorised that. There’s a very long thread on CN that discusses this:
https://www.cloudynights.com/topic/5...10-yes/page-15
IMO, that’s the way to go.