worse comes to worse, I figure they could wank some NON-FERROUS ALLOYS shit. removes that particular easy way out, while still making him a hell of a fight because, you know, fundamental force manipulation.
as for Starscream this 'time round: he was running the Earth cell before Megatron showed up. He had a plan, you see, to harvest an energon variant to power himself up so that he could slag Megatron.
Megatron responded with a point-blank fusion cannon shot. And that's where he is as of this moment, with a big hole in him.