I have a 1949 chevy 3600 that has the floating cab headliner. I ordered the carboard replacement from Classicparts.com. when i tried to install it, the floating bar seems to be in the wrong place. The front piece of cardboard is too long and the back piece too short. I checked the measurements at Classicparts.com and the pieces are as described. Is the floating bar supposed to be movable? It doesn't seem to move, but cant figure out why the pices don't fit. I double checked to make sure i wasn't trying to put the front piece in the back and back in the front but really no way to make that mistake. Thoughts?