Wii sales dropping down in US. Why?

[Delusional]

Instead of thinking at the retail level, let's take a look at production level. There's no way to output exactly 1M wii every month on the mark. There are things called efficiency and production yields. I can 100% guarantee that in the production line, each production manager will have an output "goal" or "target" they plan to reach. For whatever reasons, component suppliers late in delivery, or supplier component yields are less, therefore there's a component constraint in production. Machine down time, human error that triggers an event to stop production and resume only after the problem has been diagnosed and fixed to prevent repeat of the problem (or at least minimize it). They may, or may not be stockpiling, but IMO, most likely it's just fluctuations in production yields. And remember, even after it comes off the production line, there's Quality Control, and packaging, shipment. If there's dents and what not on the box while it is still in Nintendo's posession, the receivers will probably return it to the manufacturer or just reject the item, due to it not passing the "receiving quality."