Good to know, hbm*rais.
I think I'll change the plan to a 30 degree tilt, in line with holdennut's plans.
An added benefit is also, that due to the steeper monitor, the same monitor area takes up less horizontal space (love that Pythagoras). So my cab can be made shallower than what it would be with a 20 degree tilt.
How cool is that? More comfortable viewing angle, and shallower cab as a result... two birds, one stone, and all that...