Hello All, I started stringing recently and reached over 60 rackets. Lately some of the rackets I strung before have come back and when examined closed were slightly broken on top (at 12 o'clock). 2 were strung at 23 x 25Lbs. Last week I strung an Ashaway Nano 9675 at 22 x 24 Lbs and the guy played 2 hrs with it and the racket broke at 9 O'clock (and folded). I am sure of 3 things: 1- the rackets were not broken before 2- the rackets were not broken after or during stringing. I carefully examine all my work before delivery. I once broke a racket and gave the guy a NEW replacement, but that was in my beginning. (and one of mine). 3- the tension I go up so far has not exceeded the 25Lbs. I have a 6 point machine with constant pull. Is there something I am not doing right, if yes what is wrong here. I have followed everything possible from this forum and elsewhere. Thanx.