It's the second thing I do. First thing is to check the axle to axle length and brace height to make sure they are both in spec to begin with. After I make sure the tiller measures even at each end of the riser, then I set a nock point fairly close to where it should be. Then I go on to fine tune the tiller before actually getting into fine tuning the rest and nock height. Doing this preliminary tiller work makes the actual tuning of the bow go much easier and quicker.