SIG DAK trigger not fully resetting?

[Sergei Mosin]

I have been looking at a number of SIGs, in particular those with the DAK trigger. On one of them, a P229R DAK circa 2005, when the slide is racked and the hammer returns to half-cock, the trigger doesn't seem to fully reset - it's not stuck at the intermediate reset, but when touched ever so slightly there's a click from inside the mechanism and then the trigger has the usual dead zone. It's almost as though it's hanging up a little internally. Is that something to be concerned about?