I was talking about racquets with my father in law today and he mentioned that he used to play with a Head Arthur Ashe that were made of graphite and aluminium layers (something like that). One day one of the layers started to detach itself from the frame. He tried to glue it but there were lots of vibrations and it came off again when the racquet was used. Was that commom? Can anybody explain to me better what he was talking about? More importantly, as he still have this racquet: is there a way to repair it? Some specific kind of glue or anything else that will fix this problem? thanks.