Aw man that’s a bummer! Hope it works out for youMy Mizuno ST-Z 230 5W came in on Thursday. I ripped the plastic open and took off the stickers before waggling my new toy. I either ordered a regular flex shaft or was sent the wrong flex. Since it was opened I’m kinda out of luck on the return I figured I’d give it a shot anyway. I might actually keep this shaft. If it works it works.