Magazine problem

[Harpoon1]

I bought 2 ASC 10rd mags and i believe they are both a POS!
I have tried polishing the lip all the war around the top but both are still scratching the heck out of the shells. Can anything be done to fix them?
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The front lip on the ASC mag is higher than on the C-product or E-lander mags. The result is the edge of the case neck "stubs it's toe" trying to clear the ASC mag. Or, is at least part of the problem. I take a little mill bastard file to mine and shorten it up some, to better match the other mags.


C-Products, ASC, E-Lander in order in the attached picture.

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