I have three sideband radios and two of them have had mods to the clarifier, one is quit a good mod and the N.B. switch is for the shift,

The other radio has it unlocked and its horable, it even controls AM witch is annoying, one fraction of movement and you have gone for a huge slide. the N.B. switch is for the 26 Mhz 27 Mhz.

How could this be fixed?

The 3rd is the Cobra 2000 GLT witch has the twin knob, its very hard to use, I would like to unlock it like the first radio, is it a hard job?