You must do what Tim says or you will break off the knobs and then you will throw the whole thing away and struggle to find original ones again. When they are installed, there will be friction from the bends in the cable and there will be resistance from whatever they operate. So they must be able to work with no effort at all on the bench.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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