I was getting some noise, also. It wasn't much but seemed like enough. You probably know the biscuits come in different size holes and the hole should be slightly larger than the arrow you're using. I had plenty of clearance with mine but still got some noise. I tried lightly sanding the arrows but didn't seem to help. Then I waxed them with my bowstring wax and it pretty much fixed the noise. I didn't care much for the feel of waxed aluminum, though.[8D] I ended up just going with carbons. I've always liked aluminum better but the carbons shoot just fine and no noise with the WB. Good luck.