Hi, all.
Thanks for the good advice all round!
Dindsy: Well, I have removed the cover from the back of the scope, discovered the locking and adjustment screws, and had a fiddle. Last night I did the star test and, yes, the scope is a little out on the primary mirror. I would adjust it properly tonight, but the sky is not cooperating...so I have made minor tweeks using a ruler at the front of the scope to try and get the mirror image equidistant. Of course, this won't correlate with doing the star-style job, but at least I feel confident enough to collimate the primary mirror when the sky clears.
Chunkylad: As said above, I will be working on the collimation. For a newbie, fiddling around with my new $1000 toy is a little un-nerving to say the least, but I have managed to fiddle with more expensive pieces of my amateur radio gear, so I guess it's just a confidence and experience thing! Ack the comment about borrowing a more powerful short f/l EP. I will have to get in contact with some local yokals here in Brisbane and do that.
Cheers and many thanks!
John