I recently found a brand new set of Spirocore Weichs which I had somehow carelessly allowed to fall under the seat of my car and they've been missing since about the middle of July. It was a spare set and I was travelling. Does anyone have an opinion about whether and how this might have affected these strings? This was mostly south of NYC, so they probably got pretty hot every day. I have one other question - Is there a "shelf life" for new strings, so an unused set that is a couple of years old is maybe not as good or "fresh" as one that just arrived in the mail yesterday? Thanks for any information, and if I get bad news I promise I won't try to sell them here - I'll toss them in the trash instead.