More info on my experience with the KO's
My DYRL box missiles doesn't even tab into the wings, the peg is too thick
The TV missiles are glued to the pylons because the pegs tolerance are bad and is loose (without glue the missiles falls right off the pylons) and the peg to the wings is undersized, so it fits loosely to the wings
Grainy texture on some of the plastic surface (most noticeable on the legs)
They misassembled the legs, the ratchet joints are installed reversed (left joint is installed on the right leg and right joint installed on the left leg)
ALL pegs are loose
legs does not tab securely to the backpack
arms does not tab securely together
arms does not tab securely to the back on fighter mode (this gets frustrating with the super parts on)
The hip swivel joint is missing a part, ergo loose
Hip swing bar lock on the back is missing (or undersized, maybe mine sheared off after multiple transformations).
You can even see on the reviews the back does not lock into the front, causing gaps when using the cavity filler
Chest locks together differently compared to yamato/arcadia, they rely completely on the chest to the back light protrusions. The metal plate does not lock into the chest, relying only on the hinge friction, this makes the nose/front section to flop up n down.
In the review, when he is snapping the chest off, you can see the metal plate is already "popped off" (they do not pop-in in the KOs), if this is a yamato/arcadia, the chest should easily pop off from the back already.