Following my disappointing Amazon experience recently, my replacement Studio Series #82 Ratchet arrived today, and I was pleased to find that it was actually the Studio Series figure, not another Rescue Bots Academy, or Siege, or Earthrise... However, my joy was perhaps a little shorter-lived than I might have hoped.
I've been reading about this figure yellowing far more quickly than other contemporary figures and, to my dismay, mine was already starting to turn, inside the box. It's quite obvious that different types of plastic have been used, as some parts are pristine white across the whole figure, while other parts are discolouring inconsistently. It may not be easily apparent in the photo below, but the the panel the right side rear wheel is attached to and the robot's right thigh joint are perceptibly discoloured versus those on the opposite side, while the front wheel arches on both sides are discoloured. Making this all the worse is that the white paint used for the front section is far whiter than any of the plastic, possibly because it's painted over translucent blue.
Left side: Pristine White | Right side: Discoloured |