i am looking at ordering a 910 d3 7.5 with a fubki tour stiff flex 73 gram shaft and have considered waiting on the 913 d3. is it worth the wait i like my current driver pretty well just looking for a little bit more forgiveness than what my png i15 has to offer. what is gonna be the difference in the 910 and the 913. also will i be able to order the 913 in a 7.5 degree head