On the water issue, I had the same problem with the water running out when the tank was a quarter full still. For some reason the put the water pickup 1/4 they way up the side of the tank. I made a mod and added a bent copper tube so I could use that last 25 gallons.
2010 Berkshire 390BH Bunkhouse
350 HP Cummins & MH3000 Transmission
1200 watts of Solar power
2 - KVH R6DX Dishes with DISH HD DVR