Hands down Darton has the most innovative cure for one cam knock travel. By combining the best attributes from single cam bows(no synchronization problems and quiet operation)and twin cam bows(speed and level knock travel)they give you the best of both worlds.The "post feed" cam and large idler wheel that Pearson is using works really well controlling knock travel but its still not totally level. Black Frog is correct about conventional one cam tuning its as easy as running your nock 1/16 to 1/8" high or running a string loop seems to accomplish the same thing.