Well experience is experience, and experience is king. Thanks for the input, I'll leave the screens off for now and see how It works first. If I still find I'm getting lots of junk in my air box I try some screen. I think the way I'm setting up my holes I'm minimizing the ability of water and junk getting in.
Any way, I'm breaking all kinds of bike modding rules here, changing lots of things in one shot instead of one at a time to see how each affects the various systems. So things are going to be tricky enough to set up correctly in the end without a tough to solve problem like weird air flow from screens...
Just to clear up any confusion - I will in no way be removing the foam filter. Thats essential equipment in my books.