Quote Originally Posted by himself View Post
so, but how do they do it smarty pants?
I've never used or actually gazed upon a "real" one, only the one I built myself.

And thanks jp, you gave me a good Idea (capital I good)
You need to see how backs are fitted, it's so simple but diagrams and even photos don't tell you everything. What I'm saying is the fittings needed are so simple, nothing hi tech.