Okay gents this is my problem. I have an AR that has an 18 inch SS barrel on it. The rifle shoots great!! No problems with groups or fliers, everything is tight on the rifle, rail, rings...everything. I had a 10X SS with side focus on it at first but after doing some shooting drills with it inside of 100 yards I decide to go with a varaible. I went with a Falcon 4-14FFP. The first one I put on there ran out of left windage before I could get it zeroed,it ran out of windage with groups being about 5-6 minutes from zeroed. It was returned for a new one. I got the new one on there and went to the range yesterday. The new scope allowed me to zero the rifle but I have only 3 minutes of left windage before the scope runs out. I did'nt take my Leupold M3 with me to range yesteday but I will the next time I go out, hopefully this week. I called a good local gunsmith and asked what he thought the problem was. I told him I had the barrel cut by another gunsmith friend of mine and I didn't think it was a bad crown because the rifle still shoots as well as it did before it was cut and he has done several cut an crown jobs for me and I NEVER had a problem with any of them. He agreed it was not the crown because if it was he said it would not shoot well at all. He told me of a product that mounts to flat top ARs and it's basically and windage adjustable picatinnny mount, he didn'y know who made it but he has seen them before. Does anyone know who makes one of these? Is there anything else that I can do besides getting one of these mounts? Thanks...