Finally got around to putting a scope (Leupold) on the Sig but am having a heck of time getting the thing even on the paper. At first was shooting 2+ feet low at 25 yards and have used up all the elevation adjustment just to get it somewhat close. I have heard that some of the early Sigs suffered from canted sight bases but this was produced late last year, dunno if the canted sight issue was in the vertical or horizontal axis. I was thinking about perhaps trying a thin steel or aluminum shim underneath the scope in the rear ring but that seems like a rather crude method of dealing with the problem.Any tricks to get the scope a little closer to being on without using up all the adjustment?