Hi AV8,
Mate, I had the same prob's as you. Best advice is to go and spend some $$$ doing a few sim sessions in an ATC810 or similar. Or better still, you got access to the LINK??
I did the above for my CIR and was $$$ well spent...Also take time off work to do it. You can't work earlies and then Instruct as well as do your CIR training. One thing has to give!!!!!!!!
Cheers