You mean if I will alter the rumble code?^ Well, I'm not an expert, but having wiimotes buttons in the nunchck IF should make them working the way you mapped them, only with a nuchuck, without having them registered while a CC is connected.
Question, did you look about wiimote shortcuts? would they be registered along with a button press? eg: pressing minus button giving an input AND enable/disable rumble, both at the same time? wondering this issue if something is not specificlly made to avoid a button conflict.
Most likely yeah, but I won't get into that until I get a proper response from the code.