I checked it out, there is only one spring per key and it work fine on all of them ...

must be a defective part on that divider circuit ... is there a single divider circuit for each of the 4 ocatves ? if so the defect must be somewhere on the 4th (highest) octave divider circuit ...

Moment ! if there was a problem on the devider circuit so all highest C# tones wouldn't play ... remember there the note IS played on the piano/guitar section ... Is this preumpion correct or should we still presume the problem is on the divider ?

What do you think ?