The fletching was hitting the Bear Super Rest on my Temujen so I put a brush rest on to give me a little more clearance. I checked the nock height and it was only a sixteenth of an inch different. I figured that would be ok for a while. So I go to a charity 3D shoot the next day. During practice every thing seems to be fine. About a third of the way through the course it starts raining. I start missing low on targets. That happens. I tend to shoot low on bedded deer and alligators so I think it's no big deal. But then I start missing everything low. That doesn't happen. Of course I'm all concerned with my anchor since I use the fletch touching my lower lip as a clicker. I think I'm just not feeling the fletch since they have collapsed because of the rain. But, I've shot in the rain before and just accept that my anchor will be close but not perfect. The next morning it dawns on me that I was shooting essentially bare shafts and that the arrows were taking a dive because the brush rest is flexible and the super rest is not which makes the nock height on the brush rest about a quarter inch lower than on a super rest. So the next day, when the rain stops, I go out and shoot a bare shaft and sure enough it takes a dive. I move the nock down a quarter inch and everything is back to normal. I just thought I would share so someone else doesn't make the same mistake. Make sure your bare shaft tune is perfect before you shoot feathers in the rain because that's what you are going to be shooting.