I just dissassembled the bridge, found nothing wrong and put it back.
Someone has taken it off in the past as under the outside triangles of the 'moustache'one of the dished washers was the other way up to the other side. I have replaced them both with the edge to the wood rather than away from it, as I thought that would be the most logical and string force resisting. It has been like that for the last several decades - I have not lent it to anyone in 25 years at least.
I trimmed away the plastic which had been pressed forward into little horns under the strings.
The harmonics are right on the 12th fret, fretting the note, the lowest two strings are two lights sharp and the others are one light sharp.
On the 5/4th frets the problem has reduced - the upper strings are now in tune. Only the lower ones are sharp. Maybe there is just something in how the bridge is set up that is at fault.
My Framus has always been considered a quiet guitar, but its voice is sweet and it stays in tune for weeks.
When I used to go out singing I was always lending him out, being the only guitar still in tune by the second half.
If I can only learn how to look after it, I hope that I will not need another guitar. It was built in Bavaria, tested by Muller - with an umlat over the u, in 1967 I believe.