Review on Climax 2C 150 Plating Clamping Collar by Mark Bennett

I bought this to use as a pole collar. I cannot use it for its intended purpose as it is not the specified size. The canal is clearly out of round. It is clearly egg shaped and will not fit a 1 1/2" shank. The longer size is exactly 1 1/2" and the short size is 1 3/8". I can see where the radius starts to change, which means they're probably pressed to shape rather than forged or cut, which means almost all probably have the same flaw to some degree.The screw slots are cut and aligned well, the threads appear to be properly cut and the supplied screws will fit. If you are using it for that other purpose, good luck. , either one or both and I definitely don't understand how to remove, replace and screw in the hardware once it's in place.