Joni and I will be taking delivery of our 2552 at the end of next week, and amongst the list of things we will be having our RV techs and Ford techs take a look at is this driveline issue. We will surely post what we find. Will be nice to contribute for a change!
We will be getting our new 2552 in a few weeks, so I'll be sure to do two things: 1) Have the delivery person (dunno who that will be yet) check for the noise at those and other speeds, and 2) We will also check when we take delivery. I'll report back our findings.
Sounds like alot of fun! That's my neck of the woods. Originally from Connecticut, I spent many a day/night camping in the Adirondacks (Long Lake, Forked Lake). Can't wait to get back there, and we are envious! Are you really going up in a balloon though??