Hi Gil,
Interesting information about the xml - thanks.
I have a similar problem , but only when doing this on the laptop. When I add new models to the display, it is always hidden at the bottom left corner with just a bit poking out and quite often I cant move it as grabbing the bit that sticks out only stretches that bit.
But if I connect to a large monitor , then I can drag and resize and save it , and it is fine, so that is what I normally do . But when first defining the models it can be a bit of a hassle.
If the default position was somewhere in the centre , then it would be okay.