I searched the forums for this problem but didn't find anything too specific. I have a 2220B that I have recapped and balanced and it sounds fantastic. The only problem is the input selector is mushy and you need to fiddle with it to get it set on your input to make sure you get both channels. I have noticed this issue with lots of receivers, some have a crisp click when changing inputs and others are not as solid. Is this just a function of age? I suspect the mechanism with the ball bearing is just worn out and the switch may need to replaced the fully fix the issue. Just wanted to check if there were any other potential solution. I have cleaned the switch with contact cleaner and deoxit with no improvement. Thanks all!