Here is a first draft of a user manual:
The 3 main parts are the base, the clamp ring and the lid. The clamp ring and the lid are the adjusting assembly. The push screws are the fatter ones and they are paired with the lid as they push the clamp ring towards the base/ optical tube. The pull screws are the skinnier ones with the o-rings on them and they are paired with the clamp ring to push the clamp ring away from the base/ optical tube.
To install, remove the cap screws and pull the adjusting assembly out of the base. Then take the base and attach it to the filter wheel, RASA, etc. After installing the camera into the adjusting assembly, reinstall back into the base.
To install the camera, remove the cap screws and pull the adjusting assembly out of the base if you haven't already done this. Then slide the camera into the clamp ring, tighten the clamp screws and reinstall the assembly back in to the base.
The standard screw set comes with a 200 tpi push screw and a 100 tpi pull screw(red o-ring). The red o-rings are just dust seals as the holes they pass through are oversized so the screw can pivot when at a slight angle. When you adjust the screw set, always release the thinner pull screw(red o-ring) and then adjust the larger push screw and then snug the pull screw (red o-ring) lightly. The reason for doing this is that with precision screws, the threads are smaller and they will strip out easier. When turning a screw, it has only about 1/6th of the ability to resist stripping as it has while static so by adjusting the screw sets in this order will lessen the chance that thing will go wrong. Here are the torque ratings, divide the in lb by 12 for foot pounds.
100 tpi 650 in lbs static 110 in lbs dynamic
200 tpi 339 in lbs static 56 in lbs dynamic
The 100 tpi screws on the sides are lateral adjusters and locks so that once you get the interface adjusted how you want, then you can slowly snug these up to help hold everything solid. While adjusting the interface keep the lateral screws a bit loose so the clamp ring can move by them easily. If you need to use the lateral screws to center the light cone then tighten the screw or 2 screws to nudge the camera over where you need it to be before snugging up the other 2 screws.
An easy way to figure out where the back focus is set after the camera is installed is by just measuring how far back the front of the camera is and adding that to the sensor distance shown by the factory mechanical drawings that are available online or in the owners manual.
The m5 grub screw that is in the bag with the 4 spare o-rings is to replace the desiccant screw if need be.your description