Just got my torque yesterday and put some of my looped 1745 tubes on and after about 150 shots max they are already showing significant wear and am expecting only 50 or so more shots. I use a constrictor knot to tie my pouches but it isn't wearing there yet. It is wearing where they are attached to the Torque slingshot. I switched to looped tubes in hope that I'd get around 600-800 shots and am very very annoyed. They are just 1745 tubes from eBay. I am wondering If I should make my bands with something like heat shrink as a protector where it rubs against the Torque slingshot. Please help. Cheers.