[paqman]

Originally Posted by Nahkapohjola

Yes. Inside the rear caliper is a 'jacking' screw which extends out when pads wear and piston travels further out... this screw is to counter hand brake wire return pull spring; piston wont return by itself in zero position. They even sell a 10$ tool for turning the piston (big screwdriver is enough; used sideways).

New =thicker pads wont fit in - if piston is not pushed/rotated fully in.

Cant believe the noise is serious b/c that shop did take a peek in... any dirt may make nasty noise. But if the noise is bad, new pads seldom hurt

Front calipers - no screw - as no handbrake - just push in (SAAB with front wheel hb is an exception)

Also lube the pistons ONLY with special brake grease; check http://www.cardomain.com/ride/748507/18
...and get 10% better braking pwr.

Well the noise is REALLY loud, very noticable. It's loud in the cabin, and blaring outside. The reason the shop didn't hear it is because they never drove the car around in reverse. Just pulled it through the shop. And I'm sure all they did was take the tires off and look at the pads. They didn't take the brake assembly apart.