Question, I have a friend that bought a set of new 718 Ap2's and does not like the 6.0 project X shafts, wants to get the 6.5 instead. If I was to purchase these irons from him, would I be able to 'register' them in the event that there is some type of issue? The upside is that I would save a few bucks rather than buying brand new (these are virtually brand new!), but I don't want the downside to be that these clubs would not be 'covered' because I did not originally purchase.

Thx RD