The TS-2 has 2 collars on the main horizontal shaft that sit one each side between the two uprights. This traps the shaft in one place so as you turn it the left and right threads on either side move the wheel holding arms in or out together. If only one arm is moving odds are one or both collar are loose.
To center, place a wheel you know to be true and centered in the stand, and clamp it in gently. Loosen both collars and tap the knob either way until the wheel centers in the caliper. Push the collars against the upright and tighten the set screws.
If you get the stand fairly close to perfectly centered, say within 1/8" leave the collars alone, and fine tune the precise centering by using the large nuts on either side of the swing arm assembly to walk the arm in either direction.
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FB
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Last edited by FBinNY; 12-14-10 at 10:47 PM.