Hope this isn't a drag:
I bought a 2005 LT in 2007 in the same condition. It had 16,000miles and it, too, sat in a garage for a year. He loved it but loved his Harley's more.
Anyway, after the purchase, I rode it around town for a month then headed off to the Grand Canyon.
Out near the GC, I discovered the rear master cylinder leaking a drop every couple hours. I bought some DOT 4 and only topped it up only once. It turns out, DOT 4 is VERY hard to find in the boonies - 7-11's have DOT 3 but only auto supplies have DOT 4.
Days after that was fixed the drip recurred. It turns out it wasn't the master cylinder this time but the transmission output shaft seal. This can be fixed by mere mortals (shade tree guys) but I was days out of warranty and got BMW to fix it - after a few calls.
So a few trips to this board taught me - LT's that sit for extended periods have their seals dry out and can start to weep/leak after they go back into service.
I'd insist on having the dealer go over it and/or make a deal for some kind of personal warranty for, say, 30 days. Or, you can talk him down another $1,000 or so as it's about $700 for the shaft fix. Main seal fixing runs in the thousands so an extra grand off would make it a fair bet. As someone mentioned previously, and extended warranty would add peace of mind. Another idea; I once did a real estate deal where I signed a simple do-it-yourself loan doc with the weird terms stipulated (in your case - no leaky seals for a month) and gave them a post dated check. If everything works out, they cash the check in a month. If it doesn't you stop payment. It worked out for me (the real estate didn't drip oil
) so they cashed the check and we were all happy.
On the flip side, it's now been parked in the (California) winter for 4 months or so for the last 2 years and it's dry as a bone since the leaks were fixed the first time.