IMHO the triggers are the same and Kahr can't fix what isn't broken. The contrast you're detecting is the slight tactile difference between how the two guns are made, that is, polymer versus metal construction. The metal guns have always had a reputation of smother triggers than the polymer guns. I think it may have more to do with the trigger bar travel than the trigger itself. You said it yourself... it's getting smoother. Give it time.
I agree with your comment about the the different K9 triggers. The elite is much nicer than the older standard K9 trigger.
Judging by today's left wing, looks like Senator Joe McCarthy was right after all.