We have a job we picked up from Kone a few months back.The units are Northern Elevator. Kone reroped all 6 cars 6 mos ago. On a trouble call one of our route mechanics noticed the car break traction in leveling. So I went to the job today and ran each car on high speed and flipped the insp. sw. 3 of the 6 broke traction. The cars slid about 5ft. It was determined that the sheaves are worn and need to be undercut. Kone is refusing to do the work, so they are gonna pay us to do it. My question is, does anybody know a co. who will undercut on-site in the socal area. So far we haven't found one. We are looking to replace all 3 sheaves in a hurry. Thanks. Btw those 3 cars are shut down until the repair.