^^^^Ray, this is the crux of the matter. You can sand and polish until the cows come home, but you won't get a great trigger, well not one that you would want to compare to a real good trigger. You can make the mil-spec feel a little better, but how much is your time worth.
This is very important. I am not going to take this opportunity to beat up on the ATF, but will say if they are getting calls that you are at the range (or with buddies) and your rifle continues to double and triple, then you could have a legal problem. I have felt a lot of triggers worked on by a lot of different dudes, and I have yet to feel an one that compares to Geissele, I run them in my duty weapons and personal weapons, well all but one... that has a KAC two-stage....which isn't as good as Geissele (IMO).