I didn't realize that it was based on makerbot design, but you're right... The new method doesn't let you do much alteration to what it's pre-programmed to do.
As far as the size, life would be easier if I had a quarter inch more in each direction, but I will make do.
I have to step back and remind myself that I have had this machine for 3 weeks now, and never even paid attention to them before that....
I will learn