We have an FS 8000C that is leaving a blank spot in the lower left corner. Looks like a transfer problem, but we have replaced the entire maint. kit (drum kit, primary and secondary trans), with no change. Spot is around 2 inches, not same shape. Happens in all colors. Any help would be appreciated.

This is a shot in the dark but have you tried a different ream of paper? If there is any heavy moisture in the paper , it will cause poor toner adherence.

Lot's of reams, 3 different brands. Thanks