[GazzMeister]

Thanks for the responses everyone

So, I'm assuming that there should be no play between the ends? I've figured out that by gently pushing and or puling the tubes towards/away from one another they sometimes come into perfect alignment, unfortunately they lose collimation again quite quickly. Does anyone know where I would take a pair (in Canberra) for a professional to look at them? If there is some easy-fix to the solution instead of sending them back it would be worth it. As I said in my OP, for what I paid I'm very very happy with the optics (plus the binos look cool :-) and from all the good things I've heard, it must just be a couple of dud ones floating around for all the good ones.

Thanks again and clear skies

Gareth