ok, i have been using a tascam 424 mkII for quite some time now, and its been running pretty much without a flaw. but at sometime or another within the last month or something, the panning has become virtually non-existent. has anyone ever heard of this happening? what goes on is that when you turn the knob to the right - clockwise- the tracks volume increases. the other way, and the volume decreases, until it is muted. it really makes no sense, like, its not just like one knob broke, eveyr knob just is non-functional now. it could be something simple that i am overlooking, could anyone offer any advice? i dont want this to force me to go digital or anything!! thanks.