Thanks Bob! I will definitely keep an eye on it, but thankfully since the work was done it has not had anymore issues. The work was done by a gentleman named Doug Jones, the inventor of Acc-u-rail. Hes a master 1911 smith and also does work on revolvers. I'm very pleased with his work. I just happened to notice the marks on the cylinder and found it looked odd as my other Smiths look a little more "clean" in that area, but the gun more than likely came that way and I just didn't notice. Anyway, thanks everyone for your replies! This forum is great, glad to be here