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5a Adjust the right-side Eccentric Spacer upward with a
13mm wrench until it fits snugly against the Rail.
Using your fingers, try to turn the Bearing. The
Bearing should only move if the Gantry moves.
Note the position of the mark that was made on the right-side Eccentric
Adjustment Spacer. Count the number of adjustment marks between
the lowest position and the final tightened positioned. Make a
corresponding adjustment mark on the left side.