I transformed it and the shoulder panels snapped. I didn't realise it first until when I moved the arms and find them rather looser then before.
As I know I'm not the first to encounter this problem so to everybody who has an Energon Scorponok and hasn't snapped theirs yet, DO take NOTE to transform the arms gently.
The problem is most like a design flaw and most of us has this problem but not to fret, I repaired mine.
Doesn't fit really flush and due to the weight of his gigantic claw arms, the joints are loose but he still transforms and has wider shoulders. Just in case, here's a side to side comparison below with the customized version on the right and regular one on the left.
The Alternate mode does suffer abit as the front pegs don't close in flushed leaving a small gap near the cockpit area.
Just another small modification and customisation, actually if the panels didn't crack I wouldn't have done anything to it. You can say it was more like repairing then customizing. Well, that's all for now, will be posting more figures, robots and updates soon.
Happy holidays fellow collectors!