Herschel,
Others will chime in with their ideas but I would not attach the circle to the base. It should float!!!!!
The reason for this is that you just do a rough alignment when you set the scope up. Then upon finding a real target you adjust the azimuth circle by rotating it to match the correct object coordinate. As such. I allowed my base circle to have about 75mm of adjustment in either direction and then I just secure with Velcro. It works an absolute treat as does the Wixey for altitude.
Paul
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