Observe whats happening before servicing brakes

From : richard

Q: observe whats happening before servicing brakes! one pad worn way more then the other usually always means the caliper is sticking. when you use a clamp to push the piston back pay attention to how much turning force it takes & compare it to to the other side. do both sides close to the same time so you have a frame of reference to compare. open the bleeder 1st so old fluid does not back up into the system. if you cant get the bleeder loose you will have to replace the caliper anyway. on the rear take off the brake drum have someone apply brake while watching movement on both sides of each wheel cylinder. if they both move & you have no leakage you dont have to rebuild or replace but its a good idea to rotors can only be legaly turned by a shop to the min. for the vehicle. min. is ok thats why they have a limit. dick friday while driving home my drivers side brake started roaring. i took it down to justbrakes and they said the back side pad went down to the metal but all other pads in the truck were just fine had them replaced 2 years ago. he said the front caliper jammed up and needed to be rebuilt and the rotor was too damaged to turn which i think was bs it was just close to the tolerance he also said the right rear cylinder disc on front drums in back had leaked a little fluid because some paint was bubbled on the inside but it was dry. so the guy said the bare minimum to make it safe would be to completely replace the rotor rebuild the front caliper and replace both back cylinders. he claimed that my back brakes were not working at all which i think was bs. the total would be $309 plus tax but there was really more he wanted to do such as replace the springs and stuff. i asked what the cost on the rotor was and he said $150 because dodge rotors are more expensive due to the bearings i said i dont have that kind of cash and wont until the end of the month so i said put the wheels back on and ill park it in my driveway until then. i think when he took a micrometer to the front rotor it read 1225 and the other side was 1250 and i think he said 1210 was the replacement threshold and turning the rotor would put it too close to 1210. from the limited information i provided what do you think the brakes were installed 2 years ago at pep boys. .