Have a few of the original Ol' Man climbers, the good ones. I think they're all Grand Visions. After I was given one of the new models and hated it, I bought a few used Grand Visions off ebay. These stands probably in the 10 year old range, and for the last 6 or so years I've used them anywhere from 30-50 times per season. Question is, does anyone know if these things have an "expiration date" so to speak? As in, after X number of years should I worry about the frame giving out or anything of that nature? The platform started to fall out on one of them, so I switched to another, but I keep worrying about being 20 feet up and something just snapping.