One of my clamps (white) has an extremely tight knob, I’ve twisted it fully open (to slide it onto the cooker), but it’s extremely difficult to do it by hand and still doesn’t slide onto the cooker easily. Spent about 5-10mins tying to loosen it up by screwing and unscrewing.
My 2nd clamp (black) is fine.
Question is if this is something that I remedy myself? I haven’t gotten round to pulling that bit apart yet (too much xmas spirits in me).