I put some ice screws on the track of my skandic SWT. I talked to a friend of mine who runs a snow machine freight service and he told me that I should take them off because they can damage the frame underneath the machine. I have never heard of this before. Has anyone ever heard of this or had this happen? Is this true? I want to get more traction on the ice, but I don't want to damage my machine. Any advice would be greatly appreciated. Thanks.