The booster will not directly cause a brake to drag, it's the caliper most likely. On reinstall, be sure the pins are deburred of old rust and crud. A drill operated wire wheel works well. then use the disk brake grease lube on them to be sure the caliper releases fully when the pressure is released. I've ruined rotors a couple of times before realizing the old caliper was sticky, not releasing all the way.Hey, the rotors are 10 1/4. Nothing else needs to be replaced. The passenger side rotor is warped bc the power booster was adjusted incorrectly. This caused the front brakes to drag, overheat, and warp. At least, thats what we think. I don’t really want to but a new front brake kit. I was hoping to find rotors that size that I could replace with.