i got a problem in this area too...i mean i change my own brake pads coz going to get it change to some shop is @%$#% expensive i mean $89 per axle not including pads...this time im having trouble pushing the pistons back in, seemed like the piston got stuck in the middle or somethin, this was the first time that it happened to me, i never had this problem changing brakes from my previous cars n already did what i could exept for bleeding the car coz i got no time for that, what sucks tho is that it was the rear passenger side brakes that was only worn out the other three has 25% more to it...n i only have 32K miles to it...