I had a machine that had numerous problems. It was a 1999 CASE 85XT. It could not run at high elevation, numerous breakdowns. CASE did the right thing by that machine (and kept a customer that bought numerous additional machines since).
Inform your saleman you want to speak (or arrange a face to face meeting) to the regional sales/service rep. These guys have pull within the OEM. Have a complete list of the issues with the machine and the cost in fixing them. If its under warranty then the your lost time due to the breakdowns.
Dont be a Dbag. It sounds like your being reasonable so continue to take the high road.
I have gotten a lot of mileage from various OEMs due to my high activity on large forums such as this one. No one wants to lose sales. You have to post the OEM for that to be effective.