Ron, thanks for the info. They are vintage and I will hand wash them from now on.
Bob, I never thunk of putting stuff on top of the folding rack. I thought it was there to hold down plastic stuff. But putting the plastic stuff way up there won't hurt it either.
I also know if you load bowls in the top rack like the manual says, it will make it impossible to put mugs next to it (we like coffee, can you tell?).
Again, YOU THE MAN!