I am having this problem where my iron cobra is grinding into the hoop of my bass drum. I am left with what looks like saw dust on the floor and pedal after playing. Does anybody know why this might be. Do they sell rubber sleeves that go over the hoop and then the pedal is connected over it? If so what would be the name of it? I tried searching for one but dont know what it would be called. Any help or links would be much appreciated. Thanks.