Diesel Bombers - Fuel Filter housing

Went out the other morning to start my truck. WTS light went of turned key and all it would do was spin over. Let lift pump quit running and tried it again. Did this 4 or 5 times until battery startede getting weak. Popped hood to hook jumper cables and noticed a littler bit of fuel on top of the filter housing. Thought it might be one of the washers on the fuel line leaking. Hooked up the jumper cables and bumped the start to prime the fuel system. Fuel pressure jumped to 22 psi. Looked at the filter housing and some bubbles were coming from around the fuel heater wires. Finally got the truck started and after it warmed up no more leaking. I noticed a few days ago that the oring on the fuel drain was leaking but not much and just didn't have time to fix it yet. Called the dealer to check on the housing base and they no longer offer the base but you have to buy the whole housing for $850, what, yes $850. I have a filter housing with lines that came off a 01 that I am going to put on there if it does it again but WOW they sure think alot of their parts. $850, HOLY CRAP!!!!!!!!!!