The problem, from my perspective, is I paid a guy all this money, but he could only guess about the problem because he didn't have a way to lift the cab off the machine and diagnose the problem. So I'm out a bunch of money, for no results. And if the guy never shows up again, he's made a nice chunk of coin without any real effort. Sounds like a profitable racket. That's how it tends to look from my perspective.
I'll remind everyone that the first mechanic royally screwed up the machine, was probably too embarrassed to come back and fix it.
The second mechanic fixed two major problems, but then dropped off the face of the earth. My neighbor can't get a call back from him either, so it's not just me.
This third one is not local. He had to drive across the state to come here. In hindsight, I should have asked up front if he had the machinery to do a proper diagnosis--the ability to lift the cab off the machine. I had assumed he did, since the other two mechanics had the truck with the crane.
Ultimately, if I can't get it serviced this fall, I'm going to need to figure out how to remove the cab myself (with neighbor's help using his machine) and figure a means of lifting the floor of the cab to get at the hydraulic lines. Not something I can do with severe back pain. (I spent a bit of time trying to fix a fuel sender problem on my MEP-803A, and just crouching down for 30 minutes while working on the fuel tank put my back in a world of hurt, leaving me unable to move for the next two days.) I'll push on to do what has to be done, even if it kills me.