I was curious.. and I notice this as a string any racquet. Usually during stringing, lets say after the Mains are done.. I notice that the 6 and 12 o'clock mounting posts are a lot tighter than i originally set them. Does anyone else experience this? It takes ALOT of strength to get them to loosen up and I fear it may be warping the racquets. Wondering if anyone has some comments on this. I use a Progression ST II Gamma 6 point crank machine.