I got an LX also last year and have not had any problems with the roller. I still have the original string on though and was going to ask about replacement choices. Maybe it is the Winner's Choice serving. I have noticed a little wear on the idler wheel end of mine but I think it was a problem with my form. Other than that the bow shoots great. Good luck.


Mathews LX 67#
Gold Tip XT, Whisker Biscuit Rest
Copper John Dead Huts
Sims Stabilizers
Scott Release