It's strung and tuned open G low bass and once I am home with it I will re-string and tune to A high bass. In preparation for that I'm taking a close look at the tuners, noting one is slightly damaged and several buttons have taken on the colour of the case's lining. I don't think this instrument has been re-strung in a while and I'm wondering if it may be prudent to replace the tuners in case any break.
So two questions:
- Am I being overly cautious and should place more trust in 90 year old parts?
Can one buy suitable replacements?