The biggest trouble is with me, actually.
I like to tinker a little and if there is a drop-in component that works, I'd like to try it.
1) The trigger is gritty.
2) The surface of the trigger is grooved, and I don't know if the stamped trigger can be remedied with a Dremel.
3) Did I say "stamped trigger"? Yeah. This is an ugly trigger. Aesthetics mean something.
Thanks,
Bitterroot