I shoot a Mathews Outback and once about every 20 shots, the string jumps forward on me causing a premature release. I check with my proshop about the draw length and they told me it was correct. He mentioned that the Outback has little to no valley.

I am considering buying the Rock from Diamond. I am hoping this will not be the case with this bow. Has anyone else had this problem? How did you cure it?