Yamaha BB3000 sounds rattling as if loose parts?!?

toepump

New member
My yamaha BB3000 which is a awesome bass makes a very concerning sound when i pluck the A,D, or G strings. It seems to make a rattling noise like when the instrument is vibrating a lot and a piece of something inside is vibrating very fast. The thing is
I cannot pin point the source of the sound. It might be just strings. But I hear the sound at the head of the bass like one or two of the tuning knobs are loose or stripped! My questions are: Can you give a guess as to what is causing this? If So how can I fix it? If it is stripped on the head, is this a fixable problem?
Thank you so much for answering( if you do)
any help would be appreciated!
 
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