(Grants Pass, Or.)
Hello Sir, I have a 20 year old Roper gas range which has been in continual good operating condition. Yesterday, two adjacent cooktop knobs (left side) suddenly became un-turnable. Normal operation is to push in and turn to right to turn on the assembly, but again, they won't turn. I lifted the range top and compared the right-side operating knobs to the inoperable left side and saw that all assemblys have springs to the rear side, and that nothing seems to be a binding factor to the left side assemblys. Even light to moderate pressure with pliers does not turn the knobs, so I backed off for safety sake at that point. I have sprayed degreaser where the knob shaft meets the shaft housing, with no help. Can't figure out this issue. Any input is appreciated. Thank you.
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