Need help finding a schrader valve that can handle 600 psi. I have a Koni 3014 series single shock from the mid 80's that needs to be recharged and it looks like unless I want to send it to Ikon in Australia nobody hear in the states has the equipment to fill it. It has a small allen head bolt that is drilled like a banjo bolt for hydraulic brake lines that is somehow used to fill it. I hope to convert it to a schrader valve so that the local suspension guy can fill it for me. First I need to find a valve that can handle that kind of pressure. Oh by the way, it takes 27 atmospheres 396.9psi. Thanks for any help. Gavin