In search for a replacement Pitch bender unit for GM Equinox 76

Hi there! Hope everyone is alright in this trying times. I recently got hold of a GeneralMusic Equinox 76 in acceptable condition. Alas, the pitchbender is “out of tune” and doesn’t center correctly any more. Which is a bummer. Sadly, there is no chance on Google to find sai dreplacement part. Anyone here had the same problem and solved it?