Albert M Casper , WY July 25, 2016 The knobs and knob skirt were old and discolored Simple. Just pulled out the old and popped in the new. Rangetop looks much better, though grates and burner rings (no longer available) could use repainting with heat resistant enamel or some other treatment. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes