somewhat related question and seeing dave has done harmonics he might be one to answer as too would Sam seeing he knows all the dark arts.
when making larger pulleys for 4AGZE's its common to grub screw a new ribbed outer section for the belt to run on and increase the diameter of the pulley (equally more boost) would this extra piece majorly effect the harmonic absorbtion of the insulator agent used in stock pulleys? if it helps, the new outers are commonly ally and weigh sweet fk all.
