Whoopee, I'm back... I lost a few days working on this beast.
I know I'm jumping back in without reading everything up to this point but here's my winterizing. The water system and the head/holding tank get RV water system PINK (about 6gals) added after she run and pumped dry. Every faucet is run until I get pink out of both the hot and cold sides. The hose is removed from the inlet strainer and put directly into a non-toxic green engine anti-freeze gallon container and the engine is run until she first spits green. This gets the engine raw water and the aqua lift muffler. Once upon a time Wing Tip wintered with gallons of Vodka in the water system, but the pink RV anti-freeze is more reliable. Phil Agur Cutter Graphics

