Vibration in drivetrain after 4.11 swap

[sperry]

I did a 4.11 swap from a junk-yard (but low mileage) 2.2L Legacy Outback. Used a matching 4.11 rear-end out of a 5-speed Forester.

With the FWD fuse in the car is butter smooth, runs good. With the fuse out, there's all sorts of binding. The tranny had a bad solenoid and rear clutch pack a while back that caused bad binding in tight turns, but this is different, it's binding even in a straight line.

I've been reading the multitudes of threads about binding issues, but I'm having trouble coming up w/ a scenario that matched my issues... plus I'm not sure how much info on the SVX tranny applies to the Legacy 4EAT, though they should be very similar.

Anyone with ideas?

Thanks in advance!