Hey, I'm totally confused on this an need some UG help.

The two of the volume knobs and a tone knob on my LP copy are loose and usually it's just the knobs, but this time, I took off the backplate and the pots are loose and rattle around too. I don't really know how to fix this. Anyone know how?
ESP Custom Shop 40th Anniversary Eclipse
ESP Standard Eclipse-II
Ibanez AF85VLS