Its interesting that I see this thread tonight. I just took my BAD off of my duty gun, for this very reason. Not because I broke my catch. But, because after using the BAD for a while, and really considering the way it works, and the increased leverage you can put on the catch while using it, I feared it may cause a failure. I actually figured the roll pin or aluminum ears would fail, or the BAD clamp would loosen or fail, before the catch itself would break, though. I agree, it does seem your LMT catch was most likely faulty, though.
While I LOVE the ability to manipulate the catch with my trigger finger, I just don't think an add-on lever is the best way to achieve this. I wish someone would come out with a lever that was one piece (BAD lever and catch, in one machined piece). I would consider running something like that. Then again, you would be putting a large, higher leverage lever on a mounting pivot, originally designed for a tiny lever.
Again, I love the BAD for its intended functionality. I just can't completely trust it on my duty gun, at this point. Plus, I don't want my range guns to be vastly different, so it won't go on those either.

Bookmarks