Hi!
In one of my rental apartments, the tenant mentioned to me that two of the gas range burner knobs do not turn.
I went to look at the appliance, and the far left and far right gas burner knobs do not turn. They seem to be frozen shut.
The appliance information is:
Make: Sears Kenmore
Model Number: 362.75212100 (GE)
Serial Number: 1F133337P
Has anyone seen this type of problem? Is there some type of adjustment I can make or maybe something I need to lubricate to fix this?
Or do I need to replace the two top burner valves?
Also, could someone provide me a link to the "Repair Parts List"?
Any information/help is greatly appreciated.

Brett