Sounds like you have the right idea.

Originally Posted by: skaiser1200

I focused on pushing and rotating my wrist underneath the neck of the guitar while my thumb is just along for the ride and does what it needs to do.

It is quite difficult, actually, to focus on this and still get the scale right, but i find it a training that is worthwhile doing.

[p]Yes, it will take a while to make that kind of motion automatic. But you are on the right track because the only thing that will improve it is focused repetition until it becomes second nature.

Best of success!