Low level 4.0, back to the game about 2 years ago after 15 year hiatus. Still playing around with raquet and string combos and learning to feel dead strings and tension loss. So, Vokl Poly 16 at 60 pounds, been in ~6 weeks, but only ~10 hours play. NEW - When I played with them with my hands the strings slide around with no noise and very little friction - move right back in to place. Last night I played and they felt dried out, did not slide back in to place as well and made a lot of friction noise when I moved them around in my raquet..I also lost feel and some power when I played..are the dead?