'67 B-body bucket seat track removal help

I'm trying to disassemble my passenger bucket seat. One seat track came off easily with a nut and a bolt. The bolt was exposed by sliding the adjustable seat track far enough to expose it. The other side WILL NOT slide far enough to expose the bolt. What gives? How do I get to that bolt to get the seat off the track?

Should be able to remove all bolts from underneath the car and take the seat out and deal with it.