Yes Alain, I have to work out why something fails, only then can a way be found to sort the problem and maybe reduce the risk of it reoccurring. These parts I need are obtainable in US, but lots of Dosh to ship over, so I started on making my own yesterday, after dashing around to my local supplier for the last piece of 1" dia precision ground Silver Steel (Drill Rod in U.S.) in their stock-
Long job cutting a length off with the Hacksaw, but reached a point where the first item/part's bore is machined to size (3/4") on the lathe and ready to be transferred to the Milling Machine (still in the Chuck) for the Slots to be cut, before returning to the lathe for finishing & Parting it off-
I shall go quiet for a while on this until I have finished the parts which will require hardening/tempering and a spare complete Spindle Assembly I located arrives.