Replying to Boot moves in binding toe piece?...

So I have SPK boots that aren't worn out on the bases and px12 jibs that were mounted by a trusted shop, but there seems to be some play in the toe piece. If I lift my ski off the ground and then twist below the knees, you can see a small lateral movement of the boot in the toe piece. Is this just the shape of how the boot fits imperfectly in the binding, or can I do something about this? Cranking up the din is not the answer.