1. Center the snare wires using the bearing edges on the drum as a guide.
2. Place the strings inside the buttplate. Lock down the butt-side. Dbl. check to make sure snare wires remain centered.
3. Loosen the tension knob on the strainer almost all the way.
4. Make sure the strainer is in "Off" position when you put the strings through and only tighten them slightly, you want the strings to be able to slide in the strainer when you do the next step. A loose knot at this point will do.
5. Put strainer in "On" position and tighten the strings/knot.
6. With the strainer in the "On" position, tighten the strainer tension until you get the snare sound the way you like it. Do not over-tighten the snares, you'll dry out the sound of the drum.
After these steps, the snares should be centered on the bottom of the drum and the snare beds. It should play great for you.
John