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I noticed another thing thing on IF's Brawl, there's an undocumented step of sorts on his transformation, where you're meant to extend out his shoulders to the side.
Left side has the shoulder tucked in, right side has the shoulder pulled out. Having them extended like this gives his shoulder joint a LOT more range. When they're out far enough you'll see the tab on the shoulder outside the body pressing up against the his chest.
