My Maltby Hyway 21deg KuroKage shaft finally snapped! I love this club for most things, half swing, less than 160yd. It has 2 HiO and countless CtP. What spec should I be looking for in a reshaft?

I was sitting at KuroKage 50g R, at what i believe to be factory length. I was looking at a Tensei Blue or red ck/av. Have you guys noticed a difference in ck or av? What playing length is stock and with a raw shaft, how much should it be cut?

Cheers

John