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Hi
There are a couple of things that spring to mind. The focuser is often a weak point with less expensive scopes, but if the laser point is not moving when you rotate the focuser, that eliminates one possibility. The other is how snug is the fit of the collimator in the focuser before tightening the screw? It ideally should be fairly snug, if it moves around a bit that is a likely cause.
My old laser that was a less expensive one had a bit of play, when I upgraded to my Howie Glatter model, it was much snugger and the difference in repeatability was very apparent.
Also does the focuser have a compression ring ( a little piece of metal, usually brass that distributes the tension of the screw around the eyepiece) or does the screw contact the side of the eyepiece/collimator barrel directly?
Last comment, did the scope come with any instructions regarding collimation?
Malcolm
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