Well the recoil lug being quite a bit narrower isn't the only problem now.

With the scope mounted to the rings and then to the rail, it still slides, even when tightened all the way.

doesn't make much sense either to me that the recoil lug on the rings would be that much smaller than the gap between shoulders on the rail.

may just end up buying a warne rail, but at over twice the price of the recommended EGW that's a tad annoying.