Thanks guys
RB - I had actually looked at Bert's post before. I was still unsure which crosshairs to use as the reference for drift "up" or "down" or whether or not there was a right or wrong way to orientate the crosshairs???
I also don't have much of a horizon in those directions. I'll persevere though.
By the way, how are your headaches? I hope you are feeling better
Gary - I'll definitely give that tutorial in "The Tools" a close look. I wasn't aware it even existed. Thanks mate
Lester - you can count on me to ask the basic questions
