I put a QAD Ultra Rest on a couple weeks ago and my arrow vanes are all turning black fron contact. I think it is from cable contact. 5" vanes normally but 4" vanes are doing the same thing. I have been shooting the arrows cock vane at 9 o'clock. The arrows seem to fly just fine but contact is contact. I prefer to eliminate the problem than let it go.

Any experiences/suggestions?

Thanks