I'm just looking to confirm my doubts here but this is beyond the abilities of my Outback isn't it?
While we're on the topic my brother is a 4th year apprentice at the Illawarra Star subaru dealership, he has been told they've had a lot of trouble with centre diff's in subaru's when used for towing biggish loads (no idea of exactly what biggish is), apparently they've been failing, locking, stripping and even liquifying

Has anyone heard of or seen any of these dramas?
Jordan.