2010 Routan SEL 4.0L 50k miles and rear brake pads are gone. Rented the tool from AutoZone to compress the brake piston. (It turns the piston as it applies pressure) Removed, cleaned and re-lubricated the guide pins. Slight Lubrication on the ears of the new ceramic brake pads. Put everything back together for the passenger rear brake, I noticed a 1/4" - 3/8" gap between the piston and the inner brake pad. I observed that when the brake pedal is pressed, the piston moves and causes the brake pads to clamp the rotor. I also noticed that when you activate the emergency brake the same thing occurs. But with either braking application, when you release the brake, the piston returns too far into the caliper piston shaft. I activated and released the parking brake several times and didn't notice any difference in the piston's return location. When I took the van for a test drive I noticed that in order to keep even braking pressure the pedal will travel deeper into the floorboard. It still stops the van, but the brake pedal shouldn't keep traveling just to keep the same braking pressure. Is there anyway to adjust the brake piston? I'm thinking that it maybe causing the soft pedal behaviour.