>Can the windshield (screen) be changed without taking off the whole system?
I once changed the windshield glass between two B's. It was fairly easy up
to the point of squeezing the whole assembly back together. I used a 5 to 6
foot vise that my dad happened to leave here when he moved. It is a vise on
a very long screw; I'm not sure what the proper name for it is. You can turn
the crank on one end and the jaws slowly screw together. With the aid of
this tool, I was able to cinch the assembly back together (with all new
rubber seals, mind you) in less than an hour. Oh yeah, I had to make sure I
was being _very_ careful not to put too much pressure on the glass.