I'm getting a lot of infrequent static crunching with my Squier Vintage Modified Jazz bass, pretty sure a loose output jack is the problem. Buut because the jack goes through the plate etc I can't just unscrew the whole thing and tighten it.. Looking for a DIY solution because of a very tight budget but let me know if it's not worth it and I should just suck it up and get it serviced. (My DIY skills are very 'medium'....) Thanks! EDIT: The trouble is the knobs which also go through the plate, preventing it being easily lifted. http://www.hotwire-bass.com/tl_files/hwb/Technik/Retro/mm/mmsr3kn3bd.jpg Is there a way of taking them off?