Logical, marble or ball bearing in vice, I will try that, thanks.

Thanks for replies. Never understood why they stopped selling those degassing tools in UK. Fill valve is an altaros gauge/manometer. Hammer strike pin does not protrude at all. Looks like loosening the gauge/fill assy a fraction is the only route open. Don't like messing with HPA without the proper ...

Can anyone advise on this topic. In cleaning my air reservoir I forgot to reinstall the firing pot or 'Stove pipe regulator' as some call it. I charged the cylinder and is holding pressure at 190 Bar. Can I dry fire without the pot to empty cylinder and refit pot? Simply concerned about full 190 Bar...