Bottom hen feather wear, nock point too low?

Hello,

Today I noticed my arrows bottom hen feathers are worn-out a bit. I think my nock point is low but need some advice. I can see some wearing on the furry self as well (only at the first half and closer to the side plate) I use only the original plastic side plate plus the original furry without the extra spacers. (Hoyt Satori)

I shoot cheap carbon arrows skylon 700 spine 30” carbon to carbon with 90gr head in this phase . 28,5”DL 32-33# on fingers. Brace high 8.5”, positive 1/8 tiller. 3 under

Now point set to 3/8” (bottom of the brass nock point), I have a second bottom brass nock point installed.

Should I increase only the nock point to 1/2 ? If not the nock point what else can be? A higher draw elbow can effect this kind of things?

Thank you in advance!