Redbow,My LX was a little noisey with my 3-D selects 300' s...Total weight was 368,even though everything was spec,it was' nt what I wanted.Went to my hunting weight,413gr,which made a big difference.Try using one string leech above your peep,that will not effect your speed,but it does the quiet the string.Make sure you have the brass dampners in.My set-up is....30in,66lbs,413grs,275fps.Hope this helps.Bob