Absolutely correct!!!
I have done many many and even still occasionally need to install new parts! I keep atleast a complete set of parts on hand all the time. Common stuff I have multiples of!!
Good job!
Rule of thumb is you should not be removing material, simply smooth what's there. The parts are surface hardened and if you work thru the hardening you will have the ever changing trigger weight u til one day it will become unsafe and then not at all work.
CW