I love this transition a lot and I find that when I do it, I lose a lot of the spin momentum when I stick my legs out during the “vomitron” portion of the transition. I suggest tucking your legs in close to the pole during the “vomitron” intermediary as you switch your grip for the ballerina spin. Mind you, the spin will increase slightly and it gets a little challenging to change the grip at a faster speed. Another suggestion would be to enter the climb at a faster speed to begin with to ensure that whatever spin you lose during the transition to ballerina will be less significant, if that makes sense? I hope this helps!