Having trouble with the fit of Isacs Mags in my Saiga 7.6 with bullet guide installed already. Mag goes in but will not click in. Tried to modify one and still no click in. It appears to me the angle on the mag catch on the mag is not identical to the mag catch on the mag on my modified Saiga mag. Also, the catch on the mag itself appears wider(thicker). Anyone else have this problem? How did you resolve it? Anyone have a pict of what the mag catch on the mag needs to look like if you had to dremmel it?, taken after you did the dremmel work. Do I need to modify the actual mag catch on the rifle, which I am reluctant to do in case I get other brand AK mags