u/Wise-Grass9667

Hello, my M5C has served me very well for the past year. However I just switched out the nozzle as I've done many times before and it won't stay in. It sits loosely in the extruder, and when I try extruding the nozzle just gets pushed out.

I know the nozzles I'm using are the right size. Would the cause be the threading on the extruder being stripped? And if so is there any sort of fix or do I need to replace the entire extruder head?

I'm fearing for the worst because I know finding replacement parts is next to impossible, but also its been working just fine for me until I replaced the nozzle just today.