So your saying All derailments are the manufacturers fault?
Yeah, shallow string groves have played a roll in derailments. But at the same time, the same bows that we recalled were shot by many other people without a problem.... Torque is applied regardless. some do it worse than others.
Bet you if you took one of the destroyers with the shallow string groove, shot it out of a machine 1000X's it wouldnt derail, let someone draw it back improperly and see what happens.
Also throwing in you been shooting since 74 is cool...but in 1974 to 2011 technologies have changed drastically. While sure you might have more experience, we are all still learning the new stuff. time, in this case plays no factor.