Seat Track Disassembly a Tricky Undertaking

I would like to take apart the '65 Formula S bucket seat slides/tracks to really clean 'em up. There appears to be two approaches: A) removing/grinding on the head of a fastener so things slide out and B) a tricky way of getting over the "hump" without messing with the head. Can't find any description of either method of disassembly on this forum, but found this:

70 Challenger Seat Tracks?

seat tracks.JPG