I recently picked up a 2005 legacy wagon, non turbo with a 5spd. I got it for a pretty good price because I was told that it just needed a clutch, which I replaced (noting that the old clutch didn't look all that bad surprisingly). I've got everything back together now, and i'm just testing it while it's off the ground by putting it in gear and all wheels spin well except for the front left which jutters and moves a small step at a time. I thought initially that it was the axles, because the front left wouldn't go in all the way, but I've since replaced them and the problem still persists. I'm wondering if this is a symptom of a front differential problem or possibly the entire transmission (though I did drive it home so I can't imagine that it's all that messed up).
Thoughts?