Thanks DJS for your email reply and to you Eddie for the detail in your reply as well.
Four years ago when I was repairing the battery holder with a hammer and oxy set in the shed I wondered about the tab with the hole and then thought nothing of it for all this time. Incredible, that which is in plain sight is often invisible.
Eddie, forgive me if I have said this already.
I consulted the forum some years ago and followed your recipe to the letter regarding the mark four crankshaft rebuild. I tried a number of specialist machine shops in the Sydney basin to no avail and following advice from a close friend went to a well known machine shop in the Kelso industrial estate. I had known about them for many years but reluctant to go there as often you get chased out of the workshop if you want fiddly motorcycle jobs done. Armed with your forum specifications, the new bearings, my separated crank with original pins and conrods, we had a brief conversation with lots of nodding. I left, quickly before he could change his mind. This visit was fortuitous as it was close to home and they were able to expose their apprentice to a rare multi faceted machining job. What was presented back to me was nothing short of industrial art. Peter’s only comment was that he was a bit surprised at the hardness of the conrods which had to be ground a touch to accept the bearings. He said that he had never encountered anything like them before.
I am using this opportunity to thank you for the original post detail which I believe is the sole reason they took on the job.