That's a shocker! Never heard of one failing. They are a special order only item (hence the lead time). In other words, that unit was made for you specifically.
Although I personally appreciate you opening the unit to show us what's inside, I prob would have sent it back if it was leaking. That said, I would assemble the unit w/o pipe dope and check for leaks. Chances are the unit wasn't torqued to spec at the factory. Very strange.
Needless to say, you should email your locak distributor and notify them of what happened. Send pics, too. This should have been tight from the factory.
Just another thing for us all to check, now.
PS- I don't know if there is a preset load on that spring...I don't know what happends if you overtorque.