Dave3006 is right,you must be very firm,but not vulger,kindof like it's already a given that you are getting your way.I'm really surprised you guys are having such a problem with Ruger,as I have seen some pretty amazing service from them. A friend of mine bought a screwed-up mini14 at a gunshow that looked like it was dragged behind a truck and then filled with C4. OK,maybe it was'nt quite so ugly,but it was way beyond repair! Anyhow,all my buddy did was send it to Ruger,and in a couple of weeks he had a coupon for a brand new mini14 in his hand! NO S***!! I think sending a rifle back for the same problem more than ONCE is unacceptable! And if it was me,I would'nt accept anything but a new gun,because as you say,it looks like nothing will help this defective mini you were cursed with!