CH-46E Rotorhead help needed

Hi folks,
itchy trigger fingers and ebay resulted in a recent purchase of this bad boy below. my question is this: is there some sort of after market replacement rotorheads so i can do the blades in the stored position and if so, where can i get it?

Scale Warship does a set for it.

Joe “Mother” Szczygielski did it himself and explains how on the old Aeroscale.