As age continues its’ march, shaft material and flex continue to demand concession. Maltby TE Forged paired with Matrix Studio 84 Regular Flex Parallel (.370) Iron Shafts. Dilemma…Regular shaft to soft, Stiff shaft to stiff, so a FIRM is needed. There is no “firm” tipping instructions for this shaft sooooo if an extra inch is added to the tipping ( i.e. 5 iron tipping 1.0 inch increased to 2.0 inch) shall this accomplish the “firm” goal???
The general rule is for every 1/2” additional trim on a .370 shaft, you make it 1/4 Flex stiffer. So 1” should give you 1/2 flex stiffer, or halfway between flexes. (Of course you can’t tip trim taper tip shafts.) Hope this helps. Michael