David M Fullerton , CA January 28, 2017 One of the 4 control knobs was broken the others looked rather worn the best news was the knobs were delivered versed in 2 days and half the price of the manufacturer Easiest fix. Pulled the old ones off and pushed the new ones on. If only all such projects were this easy. Read More... 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes