I have that problem,too, with my MP04, over the left chest panel...saw a lot of the same with different reviewers on you tube as well.
Plus, The right chest panel on mine has a broken/chipped-off piece of metal, which is the worst of all the problems!
Some say the fault may be with the molds because it has been re-used a lot of times since the first model. When I lifted the side panels over the hip part, the year marked was Takara 2003, while the trailer was a more recent mold(2006, I think?).
Which makes me think about the upcoming MP01B (Nemesis) model. SAME MOLD + DIFFERENT PAINT = THE SAME PROBLEMS WITH MP04 ALL OVER AGAIN?!
Ergo, I suggest that when buying masterpiece toys, avail of the newest ones to avoid having too many disaapointments. Of course, you can always return or exchange the item!
MISB collectors beware!!!!
