Jinman, Soundguy, BobRip, Dusty, IH344, Birdman, Whitetiger, et al. You folks have all been very nice in spending time replying to my "plight". Thanks everyone. I am very appreciative.
As I spend time on this ordeal, I also get a chance to reflect on the bigger picture, and the wealth of knowledge that is made available to me, the common man, via the internet. Bless you, Al Gore....

Seriously though, flashes of the big picture do bounce around my head, when I have to recognize them, I guess.
Jinman, I'll ask around about the gauge you suggest. Some of my farmer friends may have what you refer to, and let me borrow one. I sort of hope I won't be in continuous need for one, but $50 bucks is not too much to invest, either. I'll look at the procedure you suggest. I'll probably need a little guidance when it comes down to where to install the gauge, like which FEL connection, if it matters, etc. I assume you mean to simply attach a quick-disconnect fitting to the gauge, (without teflon tape, I believe I read on a previous thread) and plug it in one of the color coded sockets. Sounds almost too easy, and makes me wonder why the dealer hasn't thought of it.
The NH rep did mention restriction, and I assumed from an improperly operating valve, check-valve, or a bad o-ring. I didn't really think about a foreign object actually blocking an inlet. But a restriction could be anything, I suppose. I am afraid of the long term damages that could be occurring due to restriction/starvation, if that causes scoring, etc. The work that Soundguy is talking about is definitely beyond my current skill level, and I expect that to be performed by a service guy. I'd rather not have major surgery done to this tractor. It's BRAND NEW, and that's the gist of this issue.
The response I get from the dealer and NH rep are exactly as you describe, very careful and deliberately non-committal. I have to ask what is the next step, instead of hearing, this is what we plan to do. That bugs me. I want to hear a plan of action, not me having to pry out the next step. This is why I ask for a new tractor. They're waiting for me to suggest something less, like in a negotiation, so I'm not going in with a low ball offer.
Dusty, the information you've provided is right on the money. The legalities of my situation have become a lot more clear, and I have the documents I need to back me up. I discussed my choice of several attorneys with some folks yesterday, and will begin the process of having a letter drafted from one of them, shortly. The mangnuson-moss document and referrals are dead nuts on what I was looking for, in the legal area. Thanks.
BobRip, EXCELLENT advice. I have mentioned a loaner, but will definitely demand one from now on. The idea of sharing the financial burden will keep the tractor from sitting in their back 40 the next time it's in their shop.
IH3444, the rep told me the type fluid he was ordering, but in my mind-racing state of negotiating the next step in this process, the only number I remember him saying was 20. I think there was some more numbers like 2022 and an impressive sounding name like, 2022 ambra hydrothiswillfixyourchit. It wasn't the answer I wanted to hear, and I didn't write it down. They're supposed to come here and change out the fluid, but no time frame was specified, so I'll be calling them on it, tomorrow.... I guess I need to video tape all conversations with these guys. Then when they don't hear the noises that are plainly there, I can have a second opinion. (The NH rep also said he couldn't hear the grinding "too good" when he was operating it. The service tech and I both heard it and we were 150-200 feet away!)
Whitetiger, I will check the level in the sensi-trac clutch. Funny thing that it has not been mentioned, as a source of the noise, or as a fluid that according to the dealer should be changed, but wasn't, at 50 hours. Thanks, I'll look at it later today.
Another thing I just remembered. The NH rep manipulated the hydraulic diverter valve when the lifts were moaning, etc. He didn't say what he found, but I remember him turning it with a large screwdriver. It didn't make the moaning stop or change the lifts' performance.
Again, thanks to all for contributing your vast wealth of knowledge. I'll keep you apprised of any significant events, related to the tractor, at least! I hope everyone has a nice day!!