Mike you might want to quiz Jase about this. I bought his old Robofocus gear from his old FSQ rig and it had a higher spec Hurst stepper motor for hauling his large camera (think it was a big chip Apogee from memory). Believe he had probs with motor reliably moving big FW and camera rig. FSQ106ED has a nice R&P focuser which is plenty strong/reliable in itself. You've probably heard the "Captain's wheel" on the ED versions caused some people tilting/movement issues.
I've only got a QHY9 and QHY FW in my image train currently.
Would be happy to test your 16803 on it for say 6 months though to save you headaches later?
