Graphite Design G Tech iron shafts. Building a set for Dad.

[kylemd]

Anyone have info on these ? I posted similar topic without replies. Building a set with these for my Dad. Need to know if these play soft or stiff to flex after trimming ( will trim for stiff flex ) and can soft step them if needed. The blanks I have to use are two A/L blanks and 8 R/S Blanks. Thought I could also build a “ flighted set” using the A blanks for 4&5 irons and the rest down the set moving into a stiffer profile for the 8/9/pw. Is this possible? 
Ive built lots of iron sets ( steel and graphite ) but never used a comboflex type of shaft. Any advice or info is much appreciated! 
 

Ive looked for info and reviews but cant find much at all. 
 

Hit em straight. 

[DArnie]

I've built my son a set with these shafts for his woods and hybrid. Just follow the tipping instructions and they will come out pretty much what would be expected to flex. Your idea for different tipping levels and different flexes should be good for helping with ease of hitting the longer clubs and accuracy for the shorter ones. Might take some adjustments and hitting experimentation though and maybe order an extra shaft or two just in case. Good luck.