Either spark erode the stud or I weld on a nut to the stud, after it has all cooled down, sprayed liquid nitrogen on the stud half turn out quarter turn in it does come out.
you're not wrong jay, i'm bloody skint so it's going back together regardless for now. seems every job i go to do on this bike i end up creating more jobs. i'm starting to wish i'd just stuck with the airhead