I will be doing the 50 hr service Saturday. So far I've no complaints at all with the machine. Some dealer prep problems and general dealer incompetence with the whole sale, but no tractor specific issues other than the blasting media pouring from the roof. LS sent actual Engineers to my house to investigate, they took pictures, used a HEPA vac to clean it up and overall were very helpful and friendly.
So friendly in fact that we grilled out, drank a Twisted Teas, went downtown to check out the Nashville nightlife and then camped my spare bedroom to collect on the Per Diem they get for hotels and meals. I even printed up an Bed and Breakfast receipt for them to turn in. LS, if you actually read here, you could not have sent better representatives to check this out.
They did send an email confirming that it was blasting media but didn't know why it was there. They will consult with the Factory Engineers to review the process to hopefully eliminate the problem.