Here is the story. My machine only gets occasional mostly utility type use. I started noticing that it would develop a bad "growl" in the rear. Upon further investigation I discovered the rear brake pads were shot, and the rotor badly scarred. I bought a new rotor and pads along with the mounting bolts and protective boots. I installed the new rotor and pads and reassembled everything. Problem solved! NOT!!! It was fine for a short time. Maybe 5 miles. Everything was as it should be. Grandkids like to ride it now and they were riding it around the property. Came in and said it's making that noise again. I checked and it definitely was so they parked it. New rotor had a twinge of blue from getting hot. So has anyone else had this issue? What I am thinking I need to do now is replace the caliper assembly with a new one. I haven't inspected it closely yet to see if the rotor is ruined. I hope not but it is what it is. Am i better off to replace the assembly and be done with it? Any input is appreciated. Thanks in advance.