I have a polaris 360 and noticed several pieces of quartz finish, about 1/8" chips, about 10-12 chips, inside my polaris bag today. It looks like a few of the tail-sweep-wear-rings are worn down pretty good. Could that be causing the tail to snag on something and rip up the quartz? Pool is 2 seasons old. So is Polaris. I replaced all the wear-rings between seasons 1 and 2. Thanks for any suggestions.