@ Sunny_Side_Up:
I dunno, but it seems the more I handle roos, the meaner they are.
I just gave up my very first Cuckoo Marans roo
because he was just plain evil. I'd kept him for years anyway, because he was special (and nice quality). But he was huge, and he spurred my husband seriously, through thick denim jeans, and my husband still has scars from it. I couldn't ever let him free range, he could never be trusted. I finally talked myself into giving him away for the stew pot. I had handled him a lot as a youngster, as I didn't have half so many chickens back then. The first time he came after me he had just been eating treats out of my hand. Now, on the other hand, I have several Ameraucana and Marans roos (including some directly related to the aforementioned evil one) that I never handled, and they are wonderful. They have no desire to be lap chickens, but I can catch them if I need to, and they've never shown any aggressiveness. I let my toddler son into the barnyard with a bucket of scratch to throw to the flock with no problems.
As for the Dutch, well, the roos are feisty little guys. But even though my Dutch roo acts up, he's still quite easy to handle. Once I've caught him he seems to enjoy the attention (or at least, he relaxes completely), but until I get my hands on him he acts pretty testy. It's actually quite hysterical when I let him out of his pen...he immediately goes to the nearest cage, which holds my largest roo--a huge black copper Marans--and proceeds to try to bait him into a duel through the wire.
Poor guy, the other roos don't seem to pay him any more attention than they would a gnat!
Anyway, my opinion is that your little roo is just reaching maturity and doing what roos do. I have never had any luck changing the behavior of a mean roo, and in my experience extra attention/treats never did any good...but it might be worth a try. I would probably just keep doing what you are doing--handling when you need/want to like it's no big deal. He might chill after awhile.