Often the polar scope is not aligned with the mount. You can verify this by getting an object in the crosshairs of the polarscope (daytime) and then rotating the mount around the RAaxis. Look through the polarscope as you rotate, if you see the object you have centered in the hairs drift in and out you need to adjust the crosshair recticle via the 3 little grub screws on the polarscope.
Be carefull !!! Overtighten them and you will smash the recticle,
too loose and it will fall out. Do the job like you were collimating an sct. ie, trial and error