Bill, I will have it all finished up next week. I have supported the tanks and have tilted the water tank and secured it. Along with raising the fill tube and vent lines to the bottom of the floor (above the tank actually) it fills perfectly now and I can pump all but maybe 12 oz of water out of tank. Before I had minium of 20 gallons left in tank when it quit pumping.
The drain line will have to be dropped below the belly but that is not a terrible deal. I will have a gate valve put right on the end of the tank and that way there will not be any water to freeze in the drain line when it is cold.
One thing I am going to do to better the bottom heating situation is run a lenght of drain pipe the lenght of the rv underneath (we have a rear tank) then connect the flexible 2" line to it. I will then cap the far end and drill holes wherever I want heat directed to which will mainly be the tank area.
Bracing up the tanks make a tremendous difference. Our black tank started out draining fine and then one day it just quite gushing and started dribbling. Reason being I found out that eventually the tank carrying liquid deformed and drooped in the middle retaining a lot of the solids. Now I have it shimmed up so everything slides towards the gate valve.
Thinking I will throw some insulation around the ends of the tanks and the areas that are just wasted space. Hopefully that will direct more heat to the tanks with less airspace to heat.
Heartland has been great in helping me out on this.
Oh and to revisit my smell that I was getting inside the rv while running the fantastic fan. This is not a positive but I am pretty sure I have traced it down to the fact that the vent pipe runs inside the same space as the refer vent and does not exit the top of the rv. Therefore it is like venting your toilet to your attic. Soon as the fan is turned on it sucks the smell right out of the tank thru the vent.
Not going to be a pretty way to fix that I don't think. Being the big refer vent cap covers the entire vent I will probably have to have them cut a hole in the refer vent for the vent line to get above the roof. Maybe this is why they quit making rear kitchen units.