Hi I passed my CBT a week ago, was a little nervous (had been a while since my last bike). But it all went off fine, yes there were mistakes but the idea is just to ensure your gonna be safe out there and in control of your bike. I would say just relax and enjoy it, as long as you complete the day you'll get your certificate. It's not all that hard Good luck
I asked one of my biker m8's at work, it seems that the locking ring that tightens up at the lever end was loose as F***, tightened it back up and it's much better. Still might take it in I'll see how she is when I ride again later.