Damn, I hate it for you.
Why not do as I did:
When I noticed t-stat was leaking I didn't want to wait on FCP Euro so I checked local parts store.
To my pleasant surprise, Autozone had Mahle t-stat which is what I bought and installed.
Price was similar to FCP and yes, only 1 year warranty but at least no shipping back and fort hassle.
You should check your local parts store for good quality WP. That way you can see what they have before buying.