natasha/steve.
If you play a little dirty, he doesn't hold back as much. He's too afraid of hurting someone with that arm. He's adjusted to the weight of it for day to day things, but fighting is going to take some time. He's got the instincts, though, so I think if I push him hard enough, he'll be up to speed. At least how he was when you knew him in the war, and not the Winter Soldier. He'll never be the Winter Soldier with his current mind in place. (Which is a good thing, in case that wasn't clear.)