I have an 04 model mighty might and the strings have not moved since the day I bought it! I should get them changed this year just for the heck of it though. I marked the cam by the limbs for referance point and it is still in the same spot it was when I marked. I am pretty impressed to be honest. I'm even missing a few strands on my string (my fault) and still no problems.

The only problem I have with my bowtech at all is the cable guard rod likes to come loose on me now and then.

Paul