Last night Alessandro tried to move upward motor 3 of SQB2 but he realized that the filter 1 was not moving. This could be explained in two ways: filter 1 was too heavy or motor 3 was stucked.
Today we tried to face both problems: we modified motor 3 in the same way as motor 3 of SQB1 (we replaced the screw and we cleaned the peek cursor) and we removed a mass from filter 1.
We checked also that the suspension was free to move in the vertical direction.
We closed the dome and it is going under vacuum.