Hello. I have a SIM 2 Max OS 5 Iron head and have been looking for an OEM Ventus Blue (non-velocore) 5A Senior flex shaft for it. I managed to find some on ebay that were pulled from a set of irons (and are therefore already cut to length). They have lengths 34, 34.5, 35, 35.5, 36, 36.5. I know the stock length for a SIM 2 Max OS 5 iron is 38.50″. Which of these shaft lengths is correct for a 5 iron?