The line is a hard plastic tubing about 3/16" in dia. it can be bent but only in a large radius.
Call Madonna Helicopters in Airdrie AB. or Rilpa Ent. in Calgary and they will supply the necessary parts.
Hope this helps
Reflecting back to the Buffalo Airways machines, OCA and the Hughes 500D painted in the pride of America paint scheme.
The people who crewed it would of been Al Engst, Cam Allen, Mike Duff, Doug B and Dave Reid.
That was a few fires ago.