Steve
That is my experience as well - they project an elongated spot rather than a nice tight circular spot. I'm fairly sure it is the performance of the little cheap laser unit they use. As long as you have the spot turning through a tight circle, it is usable. Just concentrate on the centre of whatever spot you are projecting. You can get that on the centre of the primary mirror and back on the hole in the target.
Not sure about that other grub screw. I don't have mine any more to look at it.
Eric
