Metric propane fittings

[BlackcatNC43]

Hello everyone.
I have a Nauticat from Finland. It came with metric (10 mm) copper fittings for the propane system. Changing the copper line Inside the boat means removing a lot of joinery, which I have no time or intention on doing.

The flexible propane hose from gaz bottle to the copper tubing needs to be changed. Propane experts are running away from me when I say it's for a boat! I'd have more sympathy if I said I wanted to build a flamethrower!

The boatyard from Finland did accept to send me the flexible tube and 10mm fitting. With no regulator, even if I was ready to trade a kidney for it.

Anybody knows a gaz professionnal that could help and not run away? My boat is near Newport, RI.
Thanks

[GordMay]

Greetings and welcome aboard the CF, BlackcatNC43.