Headphone jack falling out (MC3000)

Hi, I have an MC3000 and the nut that holds the headphone jack in place fell off. I’m looking for a replacement and the nut from an MC6000 does not fit. Anyone know where I can find this replacement part?

Yes, I assumed that’s an option, but unfortunately finding time during the week would be quite difficult for me due to my work schedule. I need the controller for this weekend and would really like to just having something shipped to me if at all possible.