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Hi Bill,
The side with the single knob, after opening the tightening screw, it didn't seems to be able to slide out. Either it is very tight or there's another tightening screw somewhere.
Or it is normal for the knob to remain tight even when I've open the screw? Do I have to pull harder?
The 10:1 knob is easier and straightforward, and easily slides out when I open the screw. But then, the big knob next to it is also very tight.
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