Hey Usil,
On mine the He valve screws onto the post in the first pic and I needed to use a screw driver to tighten it from the inside, then the spring pushes it out from the watch case. From there the He valve screws onto the He tube but mine has no gaskets so I do not tend to swim with it.
Wow great macro BTW!
Here is some pics of mine I had taken when I first received it and to try and show what Usil is saying.
As you can see basically the He valve is screwed onto a screw which has a spring on the outside end (between valve and case) which when the valve is screwed out, the spring pushes the He valve out away from the case.
As you can see there is no gaskets.
Unfortunately I am a fair way north so I cant point you in the direction of someone in SA and while I enjoy servicing/modding my watches I dont work on other peoples pieces.
Have you tried a local independent watch maker? I found a guy near me who had no problem with reps and even had his father(retired watchmaker) make a left handed spring for my speedy!
If Marrickvilleboy had not moved to the US of A he could have probably helped you out? perhaps he will be home soon?
The blue Oris is a great watch, considered the Tissot but the Oris did it for me.
Bought it on bracelet but also got the strap to add some variety.
Here is some shots of the new wave dial Here
Nice one!
It can be hard to keep the refections off the bracelet for sure and the paper has lessened the harshness you can get with a straight natural shot but without being too soft.