eightbore, I will recheck my gun this P.M. I do not think I have a loose lug. I was questioning whether or not the design flaw could be the issue as opposed to a loose rib. I hope that it is something as simple as not locking the rib in place as Blackdog mentioned. BTW locally, I had a smith resolder a lug on a l.c. simth for 75.00. A few months ago he resoldered the rib on another gun for 50.00. The problem with the 50 dollar rib job was that he had to do it over after I put about 100 shells thru the gun. I was advised by him and others that to resolder a rib correctly, it had to come completely off, the barrels cleaned and then resoldered. He was not going to do it. I contacted Briley at the time and I believe they indicated that the charge would be around 600 and I do not belive that included a reblue. At any rate, I opted to move the gun because of this issue.
Max