I have a problem with my 2021 RTV X1100C climate control selector. It is stuck on the upper vent mode. No matter how I turn the knob the air does not come out the defrost or floor vents. The knob does move, and it seems to have tension on it, but it certainly is not functioning. I removed most of the upper and lower dash panels, but I still have not been able to see the actual mechanism. Anyone in the forum have had this problem? I don't mind the upper vents -I use them most of the time anyway, but come winter I will want the floor and defrost vents!