Mine seem fine now I've replaced my knobs. Is your knob loose? There is a little metal bit under the red plastic, maybe try pulling your knob off and compressing the metal underneath slightly then carefully placing your knob back in the slit.
@snottyotter started
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Mine seem fine now I've replaced my knobs. Is your knob loose? There is a little metal bit under the red plastic, maybe try pulling your knob off and compressing the metal underneath slightly then carefully placing your knob back in the slit.