No...nothing is ever level, uniform or even with selfbows anyways.
I measure total length, middle and use a string to help me with string alignment, thats it. It my personal opinion that measuring should be avoided (or kept to a minimum) on selfbows....it blurs the feel, and hampers intuition.
Let the stave tell you what it wants:-)
Cheers (I realise how hippie I sound;-)