41tc headliner

[NAN-PO 41]

I have to replace the salon headliner in my 1966 41'tc. The original headliner was removed by the previous owner and replaced with vinyl siding soffett material. I have fortunate enough to get a complete headliner made for Hatteras from another member of the forum but I can't see how it would be fastened at the sides of the trunk cabin above the windows. The edges of the cabin are curved and there are no wood supports of any kind there. I don't know what the previous owner may have done in this area. Can anyone send me some photos of the side edge of a 41 tc headliner so I can see exactly how it is fastened and how close to the window frames it is. I am sure that some type of framing is nissing on my boat.
Thanks, Fred