If any one is following my JX85 saga, here is the latest. The dealer called today and said my tractor is finally ready, just 4 1/2 months after I took it in.

They were very sorry for the delay and even though estimating a $4500 bill for the work, it finally came down to just around $700. CaseIH contributed all the parts and some labor so that helped a bunch. The tractor was a bit over 3 years old at the time and the CaseIH warranty is for 2 years or 2000 hours, whichever comes first.
The issue was a $3 seal that ruptured and allowed the synchro lubricant to leak leading to the eventual synchro failure because of excess heat. The mechanic said this is "somewhat common" on the JX series and that it is fixed on the new models, just FYI. They had to remove the cab and split the tractor to repair and replace.
Anyway, I'm feeling much better about both the dealer and CaseIH, and right now my salesman is trying to locate a new TL90 or TL100 (or Case U series) as they have best incentives right now - $3000 off and 36 months at 0%. I'll let you guys know if/when I pull the trigger.