I know this post is over years ago... But damn, you removed the seat and removed the board without cracking it? 😳
Removed the front passenger seat entirely, removed the plastic panels along the roof and very carefully finnessed the panel out the rear door from memory. The panel got ever so slightly damaged along the light housing but i just glued the light to the roof and it was sweet. Cars gone now sadly, was the best $600 ive ever spent.
I think you mean remove the rear board without cracking it and without removing the rear window
I've sprayed the front and rear headliners 5 to 10 times with an adhesive spray made by USA. Sadly it made some adhesive spray stains on the fabric. Anyway I don't mind about it.
I'll try to manage to remove the board without cracking it. It will be a messy job because of orange foam. This could be my next project in year 2020 or next 2 years.
Damn $600.00. My Volvo 740 1989 was a family car but now it's my car. Still love the model and comfort.