Have been some progress with the cutdown motor, would have loved to see more of it though.
See below some pics from various work done.
One cylinder had some damage to the threads for the inlet valve cage nut. Initially I bought new nuts of great quality from Thunman in Sweden, he supplies special nuts with shallower threads.To overcome the thread issue I finally ended up with making my own special nut where the thread OD was 0,3 mm over sized. Some work, but well worth the effort.