I posted the first lighting of my newly restored Vapalux 300X here:Nearly there ... The original cap was very tatty so I fitted it with a good quality repro. However, it just did not look right so I had a chat with a friend who runs his own sheet metal fabrication business. He has worked his magic, with the result shown below. This is now my favourite lamp. One question. When is the correct pressure reached on lamps with pressure button? Is it when the button is flush with the boss?