Sig Somethin' Extra modifications.
Those tips of yours came in VERY handy. I've finished the framing and just need to cover it now. I printed out your tips and kept them right there with the Sig manual every step of the way. I'm sure they saved me a lot of headaches.
I know I'll build another S.E. and the 75 incher you're working on sounds like a trip. Let us know how it flies if you're done.