MLKeith
I think the front mounting lug is at fault as it can be turned side to side with the screw full tight.
Ouch! that is not good...
I suspect it is going to be either the U-Mag or the KRB.
Both are quality guns - sure hope one of them does it for you.
I really like my U-Mag and I certainly like the Omega's but I have a trust in the Remingtons that always brings me back...
My problem with ant gun is weight and balance, that is why I like the Omega - it feels lighter and handles like a Winchester feather weight - that I really like. The Remingtons are heavier but well balanced. The U-Mag is barrel heavy to me but man it shoots.I never shot a conical out of it or any other inline but it handles sabots and bullets just fine....
side to side with the screw full tight. Have to decide how to fix that one.
Pesronally I would send it and the stock toTC, bet you they would send you a whole new gun...