WOOHOO!
I was using the technique that I think is called "splurts" in the Practice Revolution book, and comes up also in a Trevor Wye book, where you speed up tiny sections at a time... so for instance, with B major which I was having problems with in the top octave, I went B A# REALLY quickly, and did that all the way up and down the scale, then did it in 3s, etc etc, and eventually it clicked in my brain and now I can play it more than twice as fast as I could before I did this.
It sounds really weird - I've read about variations on it before and was never convinced, but having tried it - woah! It really helps!
It is really very useful... so I thought I'd mention it in case anyone else is fighting with scales.
I'm going to try it out on abunch more yesterday - I'll master my grade 6 scales in half the time I expected to at this rate
