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You must have incredibly sensitive skin to find the knobs painful to use, as they only need nipping up. If they are painful to use, you are over tightening them. This assumes that they are in good condition, and haven't been stuffed up by a previous owner. I used those knobs for well over 10yrs and never had a problem.
raymo
Last edited by raymo; 17-08-2020 at 08:43 PM.
Reason: more text
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