What about the bolt that goes through the knuckle.
This is inside the cradle that bolts to the box that is difficult to get at, hence lowering the box or taking the box out.
Your absolutely right, although I did mine without lowering the box, however I wouldnt recommend it cus it was a nightmare, no access for spanner!!!! But i think it was well woth it, gives a nice feel but doesnt really help change gear faster just feels nicer