"Oh." Brainstorm doesn't try and hide his disappointment. "Probably the engex."

Had he skewed his results by offering him the engex? No, he had been certain that this was the right adjustment. A normal mech would have probably been heating up but Spinister-- he had some sort of special powers or something. He'd assume he's asexual if he hadn't had a personal demonstration that was not the case.

The jet practically flops back to his workspace, dramatically disappointed, and starts working on the bow again.