Does anyone know if there exists a translation of the excellent Welte
technical manual that was created for the Welte Green T-98 mechanism?

I am troubleshooting a mid-1920s Feurich Red Label T-100 [Welte-Mignon]
and that is the closest reference I could find -- but it's in German.

If there are any other reference materials for this instrument, I would
be most interested in knowing about them.

Thanks!

Joel Cluskey
Pittsburgh, Pennsylvania