Increased FB+F with JOBO processor

I recently acquired a JOBO CPP2 film processor with the 3010 film drums for processing BW 4x5 sheet film. My initial tests show an increase in the film-base-plus-fog density over my previous system which was a unicolor rotary unit. In my first test all the densities on my test card white/black and gray were higher including the fb+f but even when I achieved similar highlight/shadow and midtone densities the fb+f readings were higher to an amount easily noticeable to the naked eye than those done with my older system. Film, developer, time and temp all being the same. Anyone else experienced this, Thanks

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