ok, i shoot an older hoyt. maybe an 04 or 05 model ultra tec i believe. I only shoot about 51# and draw 28.5". When i shoot lately it seems really loud. Its not a loud crack noise, its a noise that sounds like a vibration thing. Its hard to explain, its sounds like something is lose but i don't believe anything is. I jsut got a new string on it this year and my buddy at the archery shop timed it and tunes id up he said. After that it was shooting great and queit but after about 2 weeks it started this noise. Is it possible that the new string stretching could make this noise or am i overlooking something simple? Any help would be appreciated it. Thanks