As far as I know it's pretty isolated. I have owned 2 Guardians 28" draws, and a friend has one, 25" draw and neither has the problem. I stay in contact with 3 dealers in my area and they have told me they have seen no recurring problems
Another thing I admire about Bowtech, even when a problem is only affectinga small minority of the bows it's still important for them to take care of it.
Dan