I was looking for it 2 days ago. I did come across the slider going vertical on the right of the screen as I was messing with Rocket mode then lost it again. I'll let you know if I come across it again.
I have done the same but im still looking for a suitable way to apply me details on the spark. At the moment I have a bit of paper covered in sellotape. I tried a form of fablon but it would not stick well.