Adjusting pistons on rear discs with parking brake

I started a thread in the general forum about the rear end I put in my car. It's using rear discs from a ford T-bird that have an integral parking brake mechanism. I was complaining on that thread that the rear brakes aren't working well. To put the new pads in them, I had to screw the piston back in. I was told that they need to be adjusted now. Does anyone know how this is done? I googled a bit and saw that for some cars, you just set the parking brake a bunch. Is that how it's done?? Or is there another way??
Thanks!

As far as I know, you just pump the parking brake lever a couple times.