I've noticed lately that my swing changes alot during the season. I think alot of it has to do with all the seasons we have here in Illinois. Starting out when it's cooler I have better luck with one shaft, but once we start getting into primetime weather here I have to move into the shaft I was fit into. Does anyone else run into this? I assume it's similar to using a softer compression ball when it's colder out also. Maybe I'm just over thinking things but the UST V2 Black worked great in the spring but now that I'm warm and swinging better and not as stiff I can hit the Project X HZRDUS Black better. Thoughts? Experiences? Am I just too much of a tinkerer?? lol