Charge Air Cooler - definitely broken expensive part? or might it be a gasket or connector?

Hi everyone!

Now Skoda have un****ed my DSG (see post linked at bottom) and I'm keeping the car for a while, I'm fixing it.

I have a slow coolant leak, and have observed it leaking inside the charge air cooler and nowhere else.

Before I cry a little over spending a hard-earned grand from my decade-long paycut , I want to make sure it couldn't be anything cheaper! Is there any chance it could be a leaky connector or gasket etc?

Does anyone have any suggestions for me?

There's pics of the inside of my charge air cooler here.

As a bonus question - how do I go about making sure I have the correct part number revision? and/or does anyone know how I might go about sourcing a used part?

Thanks in advance!

Skoda DSG update ****ery here: