[bgolfing]

Yes, thanks VJ and Philly. Went and looked at the Imapct Fix thread aswell and read this bit that helps too from VJ:
"In the shoulder only stroke the pivot is zeroed out and the shoulders move only because they are a part of the power package. Impact and address match. The only difference could, but should not be, the height of the putter at address and impact. If you ground the putter then a difference will be found, however if you sole the putter you are in good shape.

Since the pivot is zeroed out there is no weight shift or axis tilt. Because the hands are frozen there is no bending or cockig."