I know enough mechanical engineering to realize that when you have a 100% let off, or 80% if the pin is installed, the force to initiate the cam is slight at 80% to zero or zilch. If any adjustments are performed on the string or cable you have 100% let off or lockup. Say your little buffer stop falls off or brakes. Do you have enough energy in the other cam to initiate rollover? If so, the probability of the string jumping the top cam is certain. The top cam should have an extended lobe or compression stop. This would also create enough static tension and lateral force between the cams and limbs for a dead stop at full draw and smooth roll over when engaged . I'm always suspicious when I see an added appendage on a completed project like their little STOP. Without removing the SAFETY PIN, the bow can be locked by twisting the strings. As I'm sure your will agree, this is a common technique in fine tuning a bow to a shooters correct draw length. You have now removed the initiation of force and eliminated a tuning tool. If you will be so kind as to enlighten me as to what advantages there may be on this setup it would be greatly appreciated. If this system is still offered on next years lineup from Bowtech I may have to reconsider. Maybe it was not a mistake, just poor engineering from the start.