Hey,
You may refer to the picture of my 770, you can see it here, on post 20:
http://www.cnczone.com/forums/tormac...red_770_a.html
Not a great stand, yours looks much better. But it is sturdy. If I had to do it again I would widen the base quite a lot for added rigidity and stability But it works fine. I can shim it if I want, it is not so difficult to slightly tilt (and not really dangerous either, even though it sounds like it!). You can also just slide wooden wedge like shims and hammer it, it works too.
You can find on the tormach web site the dimension of the base and machine in general, very useful. Let me know if you cant find it I will look for you then. Let me know also if you have other question about the 770.
Christian