Definitely a divider problem. The 127 is now 36 years old and, as has been said, you can pick up a much better and more modern instrument for free or very little.I'd be very tempted to cut my losses and get something else, unless you want to revive the old girl and give her a new lease of life. If so, you've been pointed in the right direction for any possible spares.
Trouble is, the 127 wasn't actually very good when it was new, so don't expect too much.
Andy
It's not what you play, it's not how you play. It's the fact that you're playing that counts.