I can't stress enough the need for some decent tools, as described in the CLA material. The gib screws were the hardest to get out - on my camera they needed acetone (nail polish remover) several times, and then I could back them out, slowly. In your specific case, I think you may need to be careful to not get any acetone on the plastic (Delrin possibly) pinion (Zahnrad) of the rail.
It seems to me there was ongoing improvements and changes to the Norma - mine has the same focus locks as yours, but uses metai pinions. Later on Sinar did away with the focus locks. Mine is earlier (M61/62) and is comparatively in good condition (everything is still there and working). I have never seen the rear standard on the left (right one is the international back), perhaps a special order?
I am in the middle of my own process, but a few thoughts along the way:
In addition to good tools and lubricants, you need patience and the ability to think first and then act.
Be careful with applying too much force to anything. It can be time-consuming to clean the parts, and then adjusting them back, so that they work smoothly. This part "how it should feel like" is partly a personal preference, but it is also hard to really know, never having touched a Norma that is correctly adjusted. Be prepared to spend a good bit of time fiddling until it is done.
My experience is that it is easy to overdo the grease - thin emulsion of grease is the key. Otherwise you may have to clean up things (which is less effective once things are put together). Put the clean parts in containers, in one place, so that you don't have to spend time looking for things.
Unless you have a lot of available spare time, it may be more relaxed to do a bit of work at a time over several days. It's easy to get stuck for an extra hour, trying to fit and adjust the pieces, at least when one is doing it for the first time.
The final adjustments (square, level and parallel) will be the ultimate patience test, I think ... not there yet.
As for the professionals, there should be someone in Paris that was recommended to me (I have to look that up) and I have someone who may be willing to do work in Munich. PM me if you want go that route instead.
Apart from that - good luck with the adventure, if you feel like trying. And ask all the questions you may need to - there is a bunch of very knowledgable people around here. I don't claim to be an expert - I am just a medium-sized frog with a screwdriver.
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