Admittedly, I didn't spend much time investigating the issue.
Feedback from Ron at Moonlight suggests that I have the wrong perception of how I might go about using the lens. I had it in my mind that I would install it and leave it, which is actually not recommended.
I still had my 2" diagonal in the path which is probably why the system kept wanting to be forward focused. Having done a bit more research into how the optical path is actually changing, I now understand better what is happening.
If I want to do any imaging, which was the intent to begin with, I can either make do with the flange I have on the focuser and have very limited travel, using the original mirror adjust for coarse focus, or purchase the proper flange and have more options available. For visual I can simply go back to the original configuration and maybe put a stepper motor on the mirror adjust to get remote control.
Thinking through it all, I should go ahead and purchase the flange, install the reducer in one of the two Moonlight focusers I have, and treat them as one complete assembly dedicated to a specific purpose...
