No service department with any repair work, is going to put a high dollar tech on new tractor assembly. And, they shouldn't have too. That's what the newbies are for. They have to learn somewhere.
However, they also need to be adequately supervised, and their worked checked by someone who does know what they are doing. And, that's where your dealers fail you.
I have trained, and supervised many junior techs in the automotive industry. It's true, that you can't catch 100% of their mistakes, 100% of the time. But, if you train them properly they don't make a lot of mistakes doing simple tasks. And, new equipment prep, is about as simple as it gets.
Also, if you have experience in dealing with junior techs, you already know what they are going to miss, so you can catch 99%, if you want too.
I am sure there is a dealer out there, somewhere, that does all this the right way. But, sadly a high level of failures here has been and on going problem for decades.
This is why I recommend doing your own service, particularity the 50 hour. The same kid that dropped the ball on you the first time, could also be the one who is doing your 50 hour. :thumbsup:
No one will ever care to take the time to look for dry grease fittings, loose fasteners, or hose rubs that you can.