I just received my Sky Dolch, and it's generally looking great

A few keys of the E profile rows (function & numbers keys) had some issues in the back, however, where one of the four "flanges" (which limits key attachment dephs to the switches) where smeared about, particularly raised above the plane of intended depth limit, resulting in these keys being raised higher than its neighbours, when attached to my keyboard. I noticed that this particular flange (the one directed towards the user of the keyboard, for each key), when not smeared about, seemed to be present for some keys, and absent for other, so I assume it isn't necessary that this flange is present, given that the remaining three are intact.

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http://imgur.com/a/SusMb - Pardon the poor quality, the best my camera could do ...)
Is this smeared flange situation common, and something I should attempt to correct myself (sharp scissor etc)? I haven't ever "worked" with GMK plastic, so I don't want to attempt some fix that might brittle-kill the whole mx stem slider. Or, is this a manufactoring issue that should be prompted to request replacements?
Thanks!