FishyBass

Hey guys, I appreciate the responses, however I think I have explained myself poorly. My main issue is the fact the black circle screw thing on jack hole is STUCK. I cannot remove it and it is preventing me on tightening the input jack. I am talking about the thing seen in the first image, the black thing which I used to spin to tighten is the issue. I have read and seen some information on this issue and it doesn't seem like it comes with its easy fixes, however if anyone has advice please let me know. Appreciate the replies anyhow, I shall read them properly and try to make logic of them.

First post here Hello So ever since I purchased this bass I realised that the input jack was always loose, however to fix this, I would just tighten the black jack guard (the black circle around the jack) and it would fix it. However now the jack itself has gotten so loose that I cannot play plugged in anymore without any 'attack' every time I play a note. I did some research and the fix itself is very easy however, my problem is the black jack guard and how I am unable to move it, unscrew it or remove it. I don't know what to do and I don't want to take it to a shop to get charged money I don't have, any help would be appreciated. I have attached images to show you my issue.