I have newish irons, 2 years old but want a heavier shaft in a regular flex. I currently play stiff 85 gram shafts, I did a fitting and found dynamic gold 105 in regular flex work and feel better. Dang, just replacing shafts would be close to $500. Wondering where do you buy your iron shafts and is this a do it yourself job? Watched a few videos and between weighing and cutting to length seems more complex than I was thinking. Heck, new irons is only $500 more maybe I should do that.