[prairieschooner]

Actually, Steve, I like having two tanks. Getting rid of the gray water is much easier when dry camping. We can go two weeks on the black tank. I've got 120 gallons for gray, and 40 for black. Just gives me more flexibility for our style of travel. Think I'll stay with what got me here. All is fixed, and buttoned up again. Easy fix.

Not sure if you understand the Single Black/Gray Water Tank and Plumbing. The Gray Water can still be selected to go overboard without going into the Holding Tank. This makes the Black water Capacity much much larger as Ron has stated, otherwise you still have the same overall Capacity.
There is a reason that they have abandoned the previous thinking, just trying to be helpful.