Manual Center Vent AC Heater Ccontrol issues

[skeeattle]

It seems my center Blue Dot/Red Dot control has a mind of its own and I am at a loss. When I turn the dial the center to the neutral one red dot one blue dot position it seems to work fine for a while then it starts to either get too hot or too cold. I then have to readjust it to up or down (sometimes a lot) to get it back in balance. It almost like the door inside is shifting on its own or I can I be way off and this be the climate control system? Also, when I turn the dial it is not smooth when moving it. At the end of the dial you almost hear a click noise/feel.
Maybe related: I was also blowing fuses so I replaced the final stage resistor but it didnt help the center vent issue but did stop the fuse from blowing.
Additionally, when I am at idle the cabin gets warmer, then when I start driving I hear the vent doors changing postion and it starts to get colder.
BTW, this is with the climate control on the auto setting (03, X5, 4.4).
Bottom line, the climate control is not staying consistant and it seems to be because of the center contol manual dial changing temps on its own. I have tried to find other posts on this subject and cant find anything.
Any help would be appreciated.