We recently bought the fifth wheel listed above but have not camped yet due to de-winterizing being necessary. We have two grey tanks, one for kitchen and one for bathroom, does that mean we have 42 gallon capacity for each one? Or, does it mean we have to split 42 gallons between the two? Palamino said we only have 42 gallons and I do hope that doesn't mean we have to split between the two! Confusing to say the least-- Thanks for your help.