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Until the Tak experts get here I suggest you snug the screw up tight . Then check the collimation by focusing on a bright star, preferably on a tracking mount. Use an eyepiece that gives you at least 200x and look at the shape of the first diffraction ring. If it is concentric with the Airy disc your collimation is ok. If not, you can adjust by the push pull screws.
Choose one set of push-pull as the reference set and do not adjust that pair, use the other two sets in very small increments and check the star shape to see if your adjustment made it better or worse.. .
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