VGII endcap settings
I believe on certain VGII brush rolls there are 2 different brush depth settings for the brush roll end caps, very similar to the way you can change the brush depth by rotating the end caps of a brush roll from a Kirby G series machine. If you pull the brush roll out you may notice this. Simply turn the caps 180 degrees and reinsall the brush, and see if that makes a difference.
I noticed these minute differences in the endcaps of the rollers when I was completely rebuilding my S661. (pictured below)
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