After reading this forum, I raised my mower all the way up, which is 4 inches. I have KBG. Currently, when I mow, a lot of grass tends to fold over and not get cut, requiring me to make 2 or 3 passes in order to get it actually cut. Is 4 inches an alright length for bluegrass?

Is it likely that it's not thick enough yet, which is causing it just fold over like that? The blade on the mower is new and sharp. It was heavy thatch that brought me to this forum to begin with.

That being said, overall the lawn does look gorgeous. I'll post some pics very soon. It's currently a few shades darker than any of the neighboors :)