Sticky Break Pedal - need advice

[Gregsmx]

Hey everyone. I just replaced the brake booster in my Blazer. Now the brake pedal is sticky, as in it will depress, and the vacuum boost seems to aid in the pedal feel ok uner braking, but when I let off the brakes, the pedal stays down, and does not retract. You have to put your foot under the pedal and pull it back up.

I would appreciate any information relating to the mechanism that is supposed to draw the break pedal back after depressing it. There are no return springs in the mechanism under the dash.

Thanks, Greg.