I am a bit new to the site (just become owner of a wonderful, but a bit tired 325i tourer in dark metallic green

I have been looking around at solutions for my sagging headlining, which is pretty bad. On the wiki area it gives some very good details of headliner replacement - but I am a bit worried about taking the windscreen out to do it.
Are there any cheats I can do to do a repair job without having to do this? It is only sagging at the back - but trying to re-stick it with glue just isnt working as the insulation above it is just crumbling. Looking for a half way house solution if anyone has any suggestions?
Cheers
David
