Well....I have a custom string coming in the mail this coming Monday from the Bowman(George Bowman/Canada) and I cant wait! My factory string on my Razotec has been stretching! I have had to ove the sight tape on my HHA optimizer twice, as it shot great one day, then hitting high the next! Move sight tape and back on track for a week, then off again! The new string coming is out of 8125 material for the string and Ultracam for the cables. Hopefully along with less/NO stretch also will pickup some more speed.