Frank,
Congratulations on the new mount.? On my G11T, bought 4 years ago - looks the same as yours, that 1/2" Allen screw tightens the altitude adjustment.? Need to tighten both sides.? The way I did it, I had two Allen wrenches. loosen / tighten both at same time. Reason, the altitude will move very little from the set position.? Loosen just enough so that you have drag when turning the altitude knob, same for the azimuth knobs, both at the same time and just enough to move. Then tighten just that little bit and polar align should not move that much..vs loosen with no drag.?
Are you permanent or portable??? Are you using software to do polar alignment, pointing model??? Or do you slew to an area and plate solve??
I was portable but put the pier down in same location every time. One polar alignment / pointing model would last a year.? I used Sharpcap for initial polar alignment and Sky X for my all sky pointing model.? T Point did an automated mapping run, that was my pointing model and also verified the Sharpcap PA.? I also have a Paramount ME from 24 years ago.
Joe