Something is not right. Are you using the rollers or the brushes?? The PB CG easily picks up large leaves and such for me. The rollers provide better suction (they are OK for vinyl per Watertech), I switched to the brushes to, well, just brush a bit more... You do have to go directly over stuff, but you shouldn't have to go back and forth.
Perhaps pictures of your assembled unit or some description might help. Did you charge it for several hours before trying it out?
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