On a brand new transmission? that is really bad.
And the leaking rear seal too, I remember on my D2 it kept re-leaking until I got the whole new re-designed flange and new seal, but I sold it not long after that so I don't know how well the new flange held up.
For Cats I can only reccommend HJS cats from Germany, had them for over 3 years on the previous D2 sailed through emissions every time, never corroded. I now have the same cats on the current car too. They are pricey at around £350 per cat, but in this case I think the lifetime warranty is iron-clad (pun intended).
In other words the Germans build so well you won't have to use the warranty
