Don't you hate it when that happens? I had a day off from work yesterday so I figured I'd bleed the brakes on the stepside since I had a spongy pedal. Put the truck up on the lift and got out the Mity-Vac. I actually thought ahead and sprayed penetrating fluid on all the bleeder screws since I knew it had been years since they were operated. Got 3 open and of course snapped the 4th one off flush. So I get to pull the wheel, drum and brake guts to get at the wheel cylinder. At least a replacement is <10 bucks if I can't get this one drilled out. I guess that's part of the fun of these old trucks, right?