Got a Taurus PT1911 a couple of weeks ago and when cleaning after about a week the left side of the ambi safety popped out. Managed to put it back in without any complications and seems to engage fine when activated. However when testing it, put it on safety and sqeezed the trigger a couple of times to make sure it worked, after I took it off safe the hammer dropped down to half-cock. Is this normal for 1911's? Or should I get this checked out to be sure nothing is going haywire in there?