Thanks for the blow-by-blow run down. I've recently finished a 6.8 upper, and fitted it with a Vortex PST 1-4, but find it's not enough to take advantage of the 6.8. So, I'm looking at the same 2.5-10, glad to hear it wasn't the scope. My upper build was similar to yours, in that I had several set backs, and "sending stuff back." Good to see it all worked out, and I'm hoping to hit the MD class in Yak.