You have your instructor balance your props? If a student of mine wanted to learn how, I would show them... So they could do it themselves-

I balance all props just to keep vibration, noise, and engine wear down... Only takes a minute- I use a magic marker on the light tip til it balances and off I go-

Not mandatory, but I enjoy it and I have that magnetic prop balancer from Tower and it is super precise---

Take care-