The finishing stage of truing a laced wheel usually consists of fine lateral adjustments yet those meant to remove the last perceptible errors often create almost equal errors elsewhere on the rim. These new errors include both tracking and spoke-tension inconsistencies, even when spoke twisting has been scrupulously avoided and the rim /spokes have been reconditioned by overstressing and relaxing them after each adjustment.
This can be frustrating even if spokes are adjusted in left-side / right-side pairs as suggested in the section Lateral Truing on page 102 of The Bicycle Wheel, Third Edition, by Jobst Brandt.
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To correct a lateral error, tighten spokes in the error zone from one flange and loosen ones from the opposite flange. If the wobble is to the right, loosen the spokes on the right and tighten those on the left.
Some bicycle mechanics minimize fine-tuning surprises by adjusting spokes in groups of four.
How is the finishing stage of truing a laced wheel improved by adjusting spokes in groups of four rather than in pairs?