What's the advantage of the frame design on our new TT?

I am sorry but in terms of the overall numbers of Rv's built and on the road and those Rv,s that have been on the road for years...it is an EXTREMELY rare occurrence.

Don't be sorry. Spend some time on the Weekend Warrior forums and even the Airstream forums and you will see it is not all that rare for those using a weight distribution hitch improperly. I have cited factual sources to support my position; please do the same for your 'extremely rare' comments.