My experience has been going from a carry Smitty BG to a carry 938 so aside from some initial non trigger related issues, I actually really like the weight of the pull on the 938. Very clean and even. I don't know that anyone is making a kit to address any pull issues on the 938s and first I've heard that there might even be one but there are some cosmetic kits out there from Galloway and Apex. I haven't fired a G43 but have no complaints on my G22. Hope you find something more to your liking but my stock 938 has a very target friendly trigger. Call Sig at 603-610 3000. They will be able to help.