I don't know what you would use as a blanking plate - I didn't check to see what the thread is.
The removeable section is similar to ones on other scopes. It has a male thread one end and a female at the other. I cant see how removing it changes alignment.
In my particular case I removed it to go bino and found out the focuser had to be so far out.............I didn't need to remove it in the first place.........so reattached it. MBII and baader T2 prism.
Oldfracguy is probably the man to respond about adjustment screws. I don't touch that kind of thing.
You could have just used a 2" extension tube, perhaps a 35mm long one. Here is one that I needed to use in order to get the eyepiece in a Baader T2 Prism diagonal to come to focus in my 120 in monoviewing mode with the removable tube section in place ahead of the focuser:
Edited by Oldfracguy, 13 March 2025 - 01:19 PM.