No, no, no. Those are the very last things to play with. What Scott, I and others have been talking about is a rotation of the yoke itself, under the assumption that the raster has the correct geometry, and that the only problem is a rotation.
Also, do NOT work on the yoke "hot." Only rotate the yoke with the power off (and power cord pulled out). Work carefully, and you'll be able to find the right rotation with ease.