One of the countersunk M3x20mm
screw together with the thumbscrew are so tight that it is imposible to tightend the thumbscrew without the countersunk M3x20mm also is turning around.
Therefore I have to use the screwdriver together with a tool to steady the thumbscrew when I want to tightend the thumbscrew. This is imposible when the glass is placed where it should be and therefore it is imposible to calibrate the bed.
I've tried to give the M3x20 som grease, and I even tried with another M3x20. But it still turns around when turning the thumb screw.
Its the one I've placed behind at the bed.
What to do?