ode Scott , are you adding more weight to the head or cork and tungsten down the shaft to get the same MOI?
Since, it's graphite I use lead/tungsten tip weights with Swing Science heads. If they were Wishon heads easier with hosel weight ports. I very rarely use powder/cork and only on steel shafts. Last time was MoI heft matching the Stan Thompson Ginty's. If the Ginty's had a removable sole plate then I would have gone there first but they do not.
Example Swing Science FC-One Plus 7i graphite Swing Science FC-One Plus shaft 64g 3.4 torque 40" raw. 37 3/8" playing length D-5 and 2656 kg-cm ^ 2. In steel I go to a target heft of 2680 kg-cm ^ 2. in Graphite I drop it 20 points to a target of 2660 kg-cm ^ 2. these are toe down measurements. In 1/2" length graduation figure .7 increase per iron on a 14" fulcrum swing weight scale would be a rough estimate. IMO this is why golfers struggle with light graphite as the heft match is poor performing for them. Check center impacts is how I test.
