The only consistent issue that I've seen with the original BW Scorponok figure is that the 'ball & socket' joints that comprise his Robot mode's hip assembly can get very loose, very quickly if they're played with too regularly.

This literally causes the figure to be unable to support its own weight (Due to the heavy tail & claws) and becomes quite a pain to statically display as it topples into a heap.
Other than that, and the occasional Bee/Spring Claw mechanism issue, it's absolutely brilliant.

