I've had my ZE rest for about a year, and I absolutely love it. However, I've noticed over time that the "groove" in the hook arm is getting worn, causing my arrow to sit lower in the groove. As a result, my cock vane (which I use in the downward position) has begun to hit the rest on exit, and is puttin a "wave" in the vane. Do you guys think this is caused by the arrow sitting too low now? I'm guessing that's the problem, and I've already ordered a new hook arm from muzzy. Also, other than covering the hook arm with moleskin, which wears out quickly, do you guys know of anything that would slow the wear (fingernail hardener, maybe?)?