So, one job leads to another.   Replacing driver’s side crash-bar and glove box, and found the routing of the corrugated pipe from the heater to the windscreen demister fitting to be extremely tight. And, I guess it’s the original plastic piping as it pretty much fell apart….picture of the piece that came off attached! but how do you get access to the heater to replace the duct tubing? Please someone tell me I don’t need to remove the dashboard !    i could buy a 90° joint sec