I have a 17 gen 4 my trigger breaks at 3.2 lb.
I did the polish thing went to a 4.5 striker spring and installed a wolf safety plunger spring.
The connector also a upgrade to Glock minus.
And finally a basic DK trigger bar.
I know it's now my bulleye 1911 set up but a world of difference from factory.
I like to add DK basic trigger bar drop right in a needed no other adjustment.