I am thinking the same thing. When I was told that Merc said the next item to replace was the HP fuel pump, I was forced to go with it since I was leaving on a trip in two days and no other dealer could turn it around that fast. I have heard other horror stories from another Merc owner in my area. Hard to find someone good and who cares at the same time.
My question is, How can Merc not have a solution besides replace parts?