OP, I advise you remove your front wheel. Without the extra mass attached to the headset , you can feel the tightness of the headset bearings much better. Make your adjustments without the wheel attached, and you will be able to feel when headset is proper tightness. Removing handlebar can also help. You rotate the headset just with the stem. Much more sensitive. This is in support of the information you get with bar and wheel in place and rocking the front end with brakes engaged. Park should tell you how to do that.