How do you disassemble seat track?

[stadair]

I picked up a full set of seat tracks today. Both driver and passenger seat tracks. They have a bit of rust on them, but otherwise look good. I would like to disassemble them so that I may take care of the rust and then repaint them. How do you disassemble the seat track? I'm looking in between where the top meets the bottom, I see the rollers and in front of each roller is a, for lack of a better word, clip or retainer. I think that I need to get that retainer out of the way to slide the track apart. But how do I go about doing that?