Any of you guys have issues with these rests in cold weather ? I bought one for my dad, and he's just set on his biscuit for now, and I was considering putting it on my Vectrix. I like the concept, but my main game is bowhunting in the cold in november; rain, wind,snow or shine, and I don't want that thing giving me problems on a frosty morning. Some reviews on CAbelas mentioned this problem, and I'd like to hear from some folks on here about it.