Record: Stage, damper setting, ribbon movement at each point, and the stalk and cap difference between points.
Mark five points in the room: near the supply, middle, far corner, top rack, bottom rack.
Hold a light ribbon at each point and note whether it moves.
Record the stage of the crop and the damper position that day.
Compare stalk length and cap size at the five points after the flush.
Move one baffle or duct outlet and repeat the same walk.

