I just got nailed $3600 for replacement of the gasket around the timing gear box... . I was told that the labor was 22 hours and that the engine had to be removed to reach the gasket... . I was astounded to hear that something as basic as a gasket would require that kind of work and, mainly, that ANY manufacturer would make it that way. I checked with a friend at Ford and he said the same was true for those diesels, too. What's up with that?? Anybody else had this problem?? I cannot believe, also, that when I called Cummins about it I was not even given a return call or email. I have only 66K miles on the engine and my warranty expired on 3/31, so I thought Cummins might, at least, go half-way with me. Any suggestions? Thanks.