My little 7100 came with a box blade different from what I used so many years ago.
My old box was a true Gannon clone. Heavy box sides, individual rippers, each adjusted manually, and as you found, sometimes it was "interesting" to get it to work just the way I wanted.
I wasn't terribly thrilled with what I thought of as a "light duty" version (and it is) I got on my 7100. It's the style with a release "dog" that lets the main assembly rotate to 3 dog indexed positions. No idea the correct names, but let's call them drag, spread, and rip. Drag orients the blade more or less vertical with concave surface forward and tends to gather up and move larger piles of dirt caught in the smallish "box". Flip it over and you get the rippers down, and usage is obvious, though there is no dirt capture. Flip it over again and the blade is convex forward, which makes spreading and leveling quite easy. Once I figured it out (not that hard), it made leveling my side yard so very easy, and that's in spite of dinking around with a bent/broken limit bar on my 3 point. A few minutes spent in drag mode to move volume from the high spots roughly to the worst of the low spot areas, then back-n-forth and round-n-round a few times, and it looks almost smooth enough to put in a putting green (if I had any use for such a thing).
Now I wouldn't trade this thing FOR a name brand Gannon. Well, ok, I guess I would, but only because I could get one like I have for far less and have both!
I think these are popular around here for use in working horse arenas and stables?