Calling all Scheu Premier owners

I have just commissioned my new Scheu premier and the bottom edge of the (80 mm) platter obviously moves up and down as it rotates. It seems the variation is approx 1.5 mm. Is this a common feature?
My Scheu is not a Premier, but I had the same issue develop on mine. Assuming the design and engineering are similar, I would reccomend you take the platter off the spindle and check the collar for any cracks or fractures. It rests at the base of the spindle bearing responsible for keeping the platter at the appropriate height and not touching the plinth.
Thanks for your reply, I removed the platter and the collar is fine, but looking more closely at the platter the cause is that the platter varies in thickness.