Terrence06, welcome to the world of clubmaking. Basically, the shaft/head/club length thing works out as follows; a 1 iron would use a 41” shaft, a 2 iron a 40 ½” shaft, a 3 iron a 40” shaft, a 4 iron a 39 1/2” shaft, a 5 iron a 39” shaft, a 6 iron a 38 ½” shaft, a 7 iron a 38” shaft, a 8 iron a 37 ½” shaft and finally the 9 iron and all your wedges a 37” shaft. This would be for Dynamic Gold and Dynamic Lite shafts. Dynalite Gold and Dynalite would be different. The 5 iron would take a 40” shaft length. You can figure out the rest by adding 1” to the lengths above. The TT Lite XL would make the 5 iron from a 38” shaft. To confuse things even further, Royal Precision shafts use different raw lengths from those already mentioned here for True temper shafts. In your case, I am assuming that you trimmed the 3 1/2” from the butt end of the shaft. This does not change the shaft stiffness nearly as much as trimming from the tip end. Again, not knowing which shaft you purchased, you could actually end up with a little softer feeling shaft. If you hit this club well, you could have found a head shaft combination that works really well for you. Terrence, this is a great hobby to enjoy because you can do whatever you want and keep experimenting until you build the best set for you. Besides, you learn a lot along the way.