Do you still need the original pan heads as I have some old doors here?
these should be on a maintenance schedule to owning a P6 and I know that sounds over the top
until you have a problem and need to remove the frame work within the door.
Grease them with copper grease rain water ect.
Problematic to get out I found even with the head they snap off and can remain in the frame / door.
You might have to drill them out of the door/frame if not looked after
Also two metal brackets in the bottom of the door that also hold the frame in place
I cant express enough how important it is to keep this rust free otherwise they rot and snap