I made another post about some vibration on my new Mathews sbxt that I couldn't seem to shake. Well the more I ponder the more I want to point at the rest as the culprit. I am shooting 4" feathers, as well as some brand new 2" rayzr feathers with cock feather up; both are making contact. I know the 4" ones are due to the little green bits of feather on the side of the shelf on the riser. I know the 2" ones are due to the left feather(when viewed from nock) being very tattered and worn after only 30-40 shots. However, it seems that some arrows will hit where I am aiming, and others will hit to the right; b/c of the feather contact. Has anyone else had problems like this with this rest? How the heck do I get fletchings to clear? Or will this rest simply not work on the narrow shelf of a Mathews switchback XT? I am not happy with the results thus far. Opinions welcome.