If you slightly undo the red cap (undo the nut, release 1/8 of a turn anticlockwise and redo allen nut) you unload the bearings slightly. DON'T over-tighten the allen bolt... its a tiny and fragile thing.
It's a good idea not to have too much load on the bearings as they will wear out quicker... sometimes Miche put too much load on them
If you slightly undo the red cap (undo the nut, release 1/8 of a turn anticlockwise and redo allen nut) you unload the bearings slightly. DON'T over-tighten the allen bolt... its a tiny and fragile thing.
It's a good idea not to have too much load on the bearings as they will wear out quicker... sometimes Miche put too much load on them