Targa Interior

The material on the inside of my Targa "hoop" had all fallen down. I was able to undo the interior panels, push backward on the " hoop" inside and remove it. After regluing the material I can't get it back in. There are slots that have to fit on pinty bits of metal on the body ( 11 of them ) . The reason it won't go in is because of the rear glass seal getting in the way . Do I have to take the rear glass out now ??? does anyone have experience with this ?
Thanks Guys

