Welcome from Kansas City, MO. Keep them coming is all I have to say.
Yup. I've got a couple cmi mags that don't engage the bolt lock strong enough.You guys are a KEY factor for people making the decision to buy an M14 rifle. Without CMI mags we'd be suffering with sub-par junk or massively overpriced (and under available) USGI mags.
There is one thing though, that I'd like to mention, that I can see as possibly being an improvement for your M14 mags. It's been brought up a few times in the past where CMI mags don't always hold the bolt open on the last round fired, something to do with the follower being slightly different than USGI. You'll have to do some searching to find the threads or make a new thread to discuss the matter more in depth.
See this picture for the issue...was posted by another member...