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It may have the same issue mine did (I have the Orion version) the axis clutch discs are part of what sets the end clearance of the moving part of the axis to the fixed part. The clutch discs compress in use and eventually the clearance between the fixed and moving parts disappears and the parts bind together and stop the mount from tracking. Once it happens it rapidly gets worse as doing the clutch up tighter just compresses it more and also increases the binding force, so the clutch gets weaker and the binding stronger.
The good news is they are a pretty simple fix, but eventually it will happen again. I modified mine by packing the clutch discs out with alloy shims of the same dimensions, it is not quite as smooth to do up the clutch on but it should never bind again.
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