I have got here a Mentmore Autoflow in BHR. I want to try restoring it. The problem at the moment is that it does not have a pressure bar in it. Therefore I cannot see what kind of part is needed as a replacement and how it would be fitted. The button is fine and screws out nicely. Just need to get an idea about the kind and size of the pressure bar needed. I did not find anything in the archives and would appreciate to learn what exactly I need to get. Maybe there is some reference somewhere, pictures or drawings of the mechanism would of course also help a lot. If someone knows which ink sac is needed I would be glad to hear as well.