I've been driving for about two years now, not even regularly. Nothing in the way of aches or anything since except for sore muscles after the more explosive days. But for maybe the past month or more I've started to experience a regularly occurring pain in my knee. It's worse in the mornings and when it rains and starts to wear off later in the day but it's still there. This job is the only thing I can think of that would contribute to such a such a thing and I'm starting get a little concerned. How long were any other of you driving before experiencing such a problem? I'm just hoping this goes away promptly.