Thanks for visiting the blueshawk forum - mainly for players of BluesHawks, Little Lucilles & NightHawks, but all-comers are welcome
Turning the tone control knob has no effect when the bridge pickup alone is selected. It works fine with the other 2 settings (i.e. neck alone and neck & bridge).
Pickup selector doesn't make any crackling or other obnoxious noises. Same for tone control.