I love your forum! Don't care about the background colors, cuz I'm almost blind anyway!
I can definitely understand trying to work on your bus when your physically unable, so I have drawn and redrawn plans and tanks, and plumbing and on and on....
I have a three ring binder full of chicken scratch. does your bus have under belly cargo bays? If so, I have a set of plans for gray and black water tanks that would mount there. still want a floor plan? I finally came up with one that does like you wanted, not the shotgun type, but didn't loose a lot of space.
just let me know, and glad you got your bus!!!!!