GD, your experience sounds very much like my Ed Brown experience. Be prepared to loose money when you end up selling the STI. Be prepared for this to not go your way, because you didn't just drink the koolaid. I'm not trying to dour your mood, but having been there I approach these things realistically now.

I ended up selling the gun for $2,000 but had over $2,800 in the gun plus another $250 worth of parts EB sold me to make their product work (which it never did) plus 750rds of 45 ammo (most of which was fired as a single shot since the gun wouldn't work). $2800+$250+$200 worth of ammo = $3,250 - $2,000 = $1,250 lesson.