Ok I have just finished stringing an old Iso Slim 10 of mine, and found that it has broken in a very strange way and wondered if any of you could explain. The racket is in quite bad condition with many paint chips and there is evidence of 'high noon disease' (paint chip at 12 o'clock) but there are no visible breakages or cracks. However after removing the racket from the machine i found that the frame was bent in such a way that the stringbed is no longer flat. When looking at the racket from above the racket looks fine, but from the side it is visibly warped. What's more, the frame has become incredibly flexible, and it is possible to bend the head into different shapes very easily. This is the strangest thing as the racket is made from graphite and i have never known graphite to flex so much so easily without springing back into shape or cracking, especially under tension. Nevertheless, there are still no visible cracks despite having been strung at 24x25lbs. The racket had been left unstrung for a few months so this might have contributed to the damage. However I'm puzzled by the breakage as I have never seen anything like it before. Any ideas??