aha! this was the image I've seen and was in my mind! many thanks!
so it is confirm that there is a switch behind that self timer (and I am not imagining things) I just need to crack it open and have a look see,
sounds like a weekend project I guess!
Ok, after dinner while sitting down staring at my MX sitting on the table I figure weekend is still rather far ahead, I should give it a go try to fix it now since I have some time before bed time, and the following is that I've done, might help some one:
to get to the x-sync behind the self-timer peeling the front leather cover is not enough.
1) first remove the top plate
2) remove the 4 screws that secure the lens mount plate on the body (leave the lens mount alone, the entire plate that cover the front can then be lift up and WATCH OUT for the tiny WIRE and WASHER behind the plate (i did a mistake here and soon going to be begging for help in another post)
3) once the front plate is lifted, you can now access the x-sync switch like the above pictures describe, I left it in place and stick a piece of paper in between the contact to rub out the oxidisation.
4) and after testing with a meter, the contact are now working again! and the flash does fire afterwards when I put then back together!
many thanks guys!