https://www.youtube.com/watch?v=a7_DegfKh4I
Looks like it is really well done. the joys of working on a machine from a simpler time. You should see the guts of my Elna's, magnificent pieces of Swiss engineering but a genuine nightmare to try and work on. I have been able to do some work on mine but even with an incredibly rare manual, there is much that I would not touch.