Oh nice! It sounds like you're getting it nailed down then. Just curious, did you check the phasing angles? I know it's not really likely, but it might be worth checking if any of the shaft got twisted a bit, especially since you mentioned the old yoke being excessively worn.
If all that checks out, you might double check your tire balance (slung a weight maybe?).
If all that checks out, you might double check your tire balance (slung a weight maybe?).