First of all I have a QAD Ultra rest. Today when I was shooting I had three shots that were loud and I could see the arrow fishtail to the target and it hit about 6 inches off. What could cause this? I just got my rest moved up but I sighted it in before w/o any problems. Also I just added limb savers, a stabilzer, and a wrist sling right b4 I shot today. I hope that the loud noise is my arrow hitting something and not my bow experiencing the stress of a dry fire.