There are many threads talking about luxilon and other polys going dead quickly. I wanted to know if there is a good rule of thumb as to when to restring a poly like luxilon alu power. I'm not sure if I am sensitive enough to tell the difference between poly strung fresh and dead poly, but I am worried about getting tennis elbow. I usually string at 56-60 depending on my racquet. I would hate to cut out a good set of luxilon just because I am playing poorly that day. I'm sure sometimes it will be me rather than the string that is not doing its job. So what is a good rule of thumb to be safe? After it loses 10 lbs of tension? Once it starts moving visibly? After 10 hours? Thanks for your input.