I have two dozen NXT Tour balls that I won in an outing two summers ago that I put on a shelf on my back porch. The porch is unheated but is protected from any moisture. I found them last weekend while doing a spring cleaning. My question is this, will these balls be OK to play with after having been exposed to cold temperatures for two winters. I live in Western Pennsylvania so the temps can get pretty cold. Or are they fine to use as long as they haven't been exposed to mositure. Thank you.