Had to take valuable time away from RV-10 project to replace my 2006 Duramax LBZ Head gaskets before summer RV season. Failed head gasket (#7 cylinder) verified, thus a complete teardown of the upper end of diesel engine. 240,000 hard miles and 5800 hrs on her poor back. Road hard trailering the new Mothership 2.0, but she was never put up wet. New heads and gaskets, 8-new fuel injectors, new turbo compressor wheel (11-blade), new turbo bearings, new up pipes and removal of some tubing no longer desired. Hope to be back on RV-10 within a week or so. Ok, now it looks like March now.