I have a set of the TS series shafts in some MMBs and I also have a TS in a Callaway Rouge. I also have one of the Ballistic shafts in a Callawy FW. It states no shaft prep and I have been having failures in both the irons and the woods. The expoy tubes are about a yeas old but I have built steel shafts in the same time frame with zero issues. Any help would be appreciated.