Hey there,
Thanks for your advice. I think that it is possible that the levator scap gets loaded when I dance because the scap is rotated upwards when I am being turned and outwards when I dance.

I'll get my physio to look into the nerve issue and it is worthwhile investigating. We haven't gone down this path before. Will keep you posted and see what happens. I'm seeing my sports doc at the end of the month and I'm hoping he'll have some more ideas to try.

Cheers