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Originally Posted by Manav
Like Adam I'm getting sick of this as well! Tried GSO laser and the reflection shot out back missing the secondary altogather. I've been quite lucky since Brendan has the same lightbucket and the turd mount as me. I think I'll just order the XLK and continue my quest towards turning into an astrography and a 1/2.
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Squaring up the secondary under the focusser can easily be done with a sight tube made from a film canister, as Alex mentioned. [EDIT: Sticking a sheet of white paper inside the tube opposite the focuser can greatly help with this.] Remember that this is not a critical adjustment (compared to collimation). If you get it slightly wrong you'll loose a tiny amount of light, but will still be able to bring the two mirrors into collimation. So eyeballing it through a sight tube is all you need to do. You should take a vernier calliper or ruler to the spider though, to make sure it's centered in the tube.
If the reflected laser beam from the primary misses the secondary then that's not because the secondary is out of place (it couldn't be out of place by that much). Simply proceed by titling the secondary (using its collimation screws) until the laser spot hits the primary's centre, then tilt the primary until the beam folds back on itself all the way up.
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By the way I think I may have stuffed up the thread on the three screws on the secondary  Probably worth looking for Bobs Knobs for those.
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Bob Knobs are definitely recommended. They make collimation much easier and safer.
Cheers
Steffen.