My AC control that lie horizontaly below the climate box thing feel jammed, AUTO works fine OFF works fine but all the other buttons I think there are maybe 5 or 6 more require a huge amount of pressure to push them and once there on I cant push them to shut it off. Should I take it apart and try to clean it off or just try to pick one up for some one parting out an LS. When I purchased the car there were coffee stains everywhere, I think there may be some coffee build up preventing them from moving. 2001 V6 with 70K miles. thanks in advance