Speaker Placement/new component

Yes, I always tweak speaker placement after changing something that makes a difference in the sound. I have had better results doing so and the change in position "can" be as little as a 1/2 an inch or a few degrees of tow in.

Yes, I second HWY in that you should familiarize yourself with the new sound "before" you experiment with speaker position. Otherwise there are too many vaiables to deal with at once (for me anyway). Also,if you have to power down components when switching out gear you will want to wait until the system is steady again. I just wasted a lot of energy by being impatient and not following this simple concept recently.