So this advice might be totally out of line for Chris King headsets but my boiler in the kitchen has a specific "key" I need to plug in and turn to close a gap to refill if the tank pressure is low.
It has an o ring as well and I couldn't get it in for the hell of it. For the lack of anything else at hand in the kitchen I used olive oil and it slipped in like nothing ¯_(ツ)_/¯
So this advice might be totally out of line for Chris King headsets but my boiler in the kitchen has a specific "key" I need to plug in and turn to close a gap to refill if the tank pressure is low.
It has an o ring as well and I couldn't get it in for the hell of it. For the lack of anything else at hand in the kitchen I used olive oil and it slipped in like nothing ¯_(ツ)_/¯