If you've got any bad AR habbits...

[guns_not_groceries]

That's one thing that I suck at and that's engaging the safety (disengaging is fine, but re-engaging, more often than not, I catch myself fumbling or having to turn the weapon on its side to reach my short stubby thumbs over to engage the safety lever).

I've got short thumbs too. It sucks. If you end up getting an ambi safety, could you give us a report? I'm intrigued.