Thanks for the input guys...a couple of things I now notice
- the p seal seems set low and doesn’t appear to push the top upwards...the edge of the top seems to be quite a distance from the header
- looking at the latches carefully, I noticed that the LHS latch was loose...so this is a quick win and definitely pulls the roof closer on that side
its probably not the whole story, but just looking at the thread has expanded my knowledge..AND made me look closely enough to fix the latch...result !
now I just have decide when I want to glue back the sagging headliner😂