Peter Baschartz lives in Austria, I have his contact details if you want them.
Another much cheaper solution than replacing the cones is to use bronze synchro rings in repair size; Denis Quella sells them,
Peter Baschartz lives in Austria, I have his contact information if you want them.
Another much cheaper solution than replacing the cones is to use bronze synchro rings in repair size; Denis Quella sells them, in 2023 he sold them for $165 each but you have to adjust them to get the desired clearance:
and then lap them so that they match the pinion cones perfectly:
and here is the result:
That's what I did and for the moment my ZF works very well.