I bought the replacement knobs from Appliance Parts Pros.com and they were much better knobs that what originally came with the unit. They are actually metal and the plastic posts that connect with the range are a much higher grade plastic. To be honest I think the stove works better than it did when it was new. Some of the original knobs may have been broken when we purchased the unit. Replacement took under 5 minutes for all of the knob. Oh....and by the way....they appear to be the same knobs you can purchase elsewhere but these guys sell them for about half the price!! The parts arrived in 2 days. I can't tell you how happy I am with this purchase!