I have been intriqued with the new cam and 1/2 as it looks so much like the Darton CPS, which I have sold, used and love. It looks like a similar concept, but it appears that they may have made it easier to change draw lengths, etc. On the Dartons, you tune them to the middle mark first, then make changes for draw length. The string will not be centered on the tuning marks if you change away from the center marks, but they claim they are still in tune....just note where the string lays in comparison to the marks. Darton also claims that if you are not in true tune the bow will shoot OK, just not get peak performance like if it were properly tuned. I see Darton has again made some changes to their CPS system for 2003.