I'm looking for new irons and the goad is to get closer to 7000 rpms of spin. For some reason, I can't find a way for any combination to get me the spin I'm looking for. even the most spinny shafts combined with cb's only gets me into the low 6000. I can't figure it out. My club speed is from 83 to 86 with a 7 iron, attack angle is around 3 to 4. Please help!