Got kritters in mine and used Bio Kleen from Power Service Products to kill it. Had to drain my hfcm several times and kept a spare filter on the truck just in case. They said 2oz per 29gal tank twice a year will keep the problem away also. Also, was told dropping and steam cleaning the tank...
I'm right behind you Dave. I love my truck even though it hasn't been perfect, its been as good or better than any other vehicle I've owned foreign or domestic. The fun to drive factor is better than any other.
BE