That's an EV table. Meter the scene, find the corresponding EV in the table and set the shutter speed and aperture accordingly. EV = exposure value.
Many meters of the day have a EV scale.
1. Graflex requirements are A) the shutter should close and lock from O with the tension on 1. Lock is the wind key will not turn opposite the wind arrow; B) the shutter will wind and lock at the smallest aperture with the tension on 6 or high.
I have found that the shutter may meet condition...
A better copy is available here: https://learncamerarepair.com/downloads/pdf/Rolleiflex-TLR-Repair-Manual.pdf
Other Rollei manuals here: https://learncamerarepair.com/productlist.php?category=2&secondary=15
You left out one important feature for the average user. There is a clip at the front edge of the view hood at the ground glass that releases the view hood from the ground glass allowing for cleaning the top surface of the ground glass. There is a grove just above the rear of the groundglass...
Locktite 242 Blue thread locker. Apply a drop to the threads then install the bolt/head and tighten.
Other brands are likely as good as they use the same number and color.
242 Blue breaks at 40 inch pounds of torque, using more such as coating the full tread makes it more difficult to remove...
I use water as a stop but I fill, agitate, dump 3 times before moving on to the fixer. I do not use single reel 35mm tanks. I put the film loaded reel on the bottom of a 2 reel tank with an empty reel on top and do not leave an air space at the top. I filter and reuse the fixer also.
I have been using Jobo 25xx tanks and reels since the mid 1990's. I'm not a fan of the 2502 for 120/135 but the tanks and 2509n reels for sheet film are like going from a bottom of the line economy car to a Bentley.
The 1500 and Patterns came into existence since I went with Jobo. The 2500's...
Leaf shutter operation uses a timer delay mechanism for speeds from 1 second to 1/125 second. There are two adjustments on the delay timer, the travel of the operating lever and the tension on the pallet. Slow speeds use the maximum travel of the operating lever and the maximum tension on the...
Have the back serviced. The lubrication has likely dried out causing the failure. Mamiya uses a clutch system in the film advance and the clutch is slipping.
That Synchro Compur is very difficult to service if you are not experienced in shutter repair. The lens shutter combo is not listed in the table of lens shutters but its likely a CN-1307-000 on pdf page 90 of https://learncamerarepair.com/downloads/pdf/Compur-Factory-Shutter-Repair-Manual.pdf...
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