Ed B San Bruno , CA November 30, 2016 Appliance: General Electric Refrigerator TFX27ELB Ge Refrigerator Tfx27elb: The riser cam wore out and failed causing door misalignment. How to replace Door Stop. I emptied door shelves and used plastic sheet to close off refrigerator. The repair was done with refrigerator running. I removed door and changed riser cam and shim. Then replaced door. It took maybe 45 minutes from start to finish. If I did the job again it would be completed in 30 minutes or less. The videos are informative. Thank You 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes