MCX8000 decks swapped sides?

I have an MC8000 which I bought recently second hand.

For some reason, the left deck screen shows as 2 and the right deck shows as 1.

This happens in both engine and Serato.

Any idea how / why?!

Always been like this in my ownership.

Hi It may have been opened at some point and the cables of the screens were reversed, opening it and fixing it is not difficult but it is laborious because there are many screws