Jack, you forced this response out of me. Last April I bought a new Scamp 13 deluxe. I was quite OK standing inside. Soon I discovered however that instead of being 6'-1" per my last measurement 20 years ago, I was only actually 5'10" tall. And I had numbness in both legs.
In August my back started hurting way too much and so I got an XRay and an MRI. This and visits to two doctors defined five separate back problems including a 15 degree list to starboard.
In mid January 2006, I had a 10 hour operation and though I am now walking, I have a ways to go before I'm Scamping without pain pills.
Oh yes. I measured again. The operation added a bit. I am now 5' 11 1/2". I'm curious if my head will brush the ceiling.
Moral: Don't assume you are still as tall as you were as a young man. Shrinkage is a very real thing. Before you check the trailer height, check yours.