Tony looked down at his work, mouth screwing over to one side in consideration. Better than it was, he supposed. Now on to the next issue. When he heard Steve, however, his head came up. Oh. Right. Probably should have warned Barnes about what he was doing. As the answer to both Steve's question and Bucky's look, he took hold of the metal forearm and bent it at the elbow a few times, producing a far less ominous sound than the previous screeching.

"Look, no more squeaky."

He glanced from Barnes to Rogers and back and set the arm back down like that explained everything.

"Still a problem with the wiring in here," he continued, turning his attention back to what he'd been doing, this time at least making an effort to announce his actions.

"But this control module is, for lack of a better word, weird. Not that I can't figure it out, obviously, it's me, but gotta say I was expecting something different. I mean, what the hell is this?"

Using the screwdriver as a pointer, he rapped on a metal lump covered in wires coming from further up the arm.