It sounds here in the description of the terrible noise as with my 4/4. In my case it was such a loud squeak that I thought metal rubbing against each other somewhere.
The solution came by chance. It can be a lot but this squeaking is abnormally loud and unique. It was only the passenger side:
with us it is the contact surface of the lateral vertical rubber of the windshield In interaction with the outer front aluminum frame of the side window.
Vaseline or silicone spray and I have one to two years rest.
I noticed that this noise didn't occur with older Morgan if they didn't have this new but helpful small rubber edge yet, you know, this edge that is supposed to protect the front side window from fluttering while driving.
