> A quarter inch does not seem to be much to make the vent sit centered on =
> the body, seems like the tubes still have difficulty anyway, what's =
> another quarter inch?

I just put my fridge back in yesterday.  Those "flexible"
tops on the intake/exhaust tubes mostly flex in-and-out and
not up-and-down.  If you have the hole a quarter higher,
I think you will have trouble pulling the tubes to it
and when you do, the angle will not match the metal
skin, so you won't be able to get the exterior parts
(plate and rubber gasket, etc) to be flat again it.
It has to be flat against the exterior skin to seal
the intake tube.

                        Richard A Jones
                        Boulder, Colorado