Had a buddy do rear brakes for me the other day... I had a blown brake cylinder so since you have to tear the whole axle apart to get to it we figured we would change the brakes while we were at it and do both sides.. including putting new brake cylinder on the other side...and what the hell brakes are under warranty anyhow... However since he did them the truck feels like it is fighting itself.. like it is being held back.. we noticed on the driver side (which happened to be the side with the bad cylinder), when we took it apart the thick brake shoe was on the front (closest to cab)and the thin shoe was on the back.... The passenger side was just the opposite the thin shoe on front the thick shoe on back ....my vote was to put the new ones on the way the old ones were on it... I figured they worked this long that way maybe that's how they go... However my vote got vetoed... He and another mechanic said that the thick shoe should always be on the back.. so they put them on the back on both sides... any chance that is what's causing the truck to feel like it is dragging??