55 bel air i have solid front bench and bought new front seat belts?? how do you get the belts to go under seat ( in between back rest an seat ) there seems to be some type of bar blocking me from passing the belts between the seat ? ive pushed down an used my knees trying to get my hand through w/o luck does this seat come apart somehow ?where i can lift backrest up 1 inch in or so ? ...believe me ive tried there is no way? to pass them let alone my hand through the seat had to come apart for the upholsterer ?