I run a Sanitaire blue 5 amp upright with a Vibra groomer ll brushroll but find that the white bristles aren't very stiff. Are the blue inserts stiffer? Thanks! Greg
How old are your inserts? Perhaps it's time to replace them. I have three Sanitaire and Eureka machines with the VGII. The bristles on the brush strips are white, set into blue and orange rubber/plastic. They seem to do a quite adequate job. Are you saying there are strips with stiffer blue bristles? I wasn't aware of those.