I am with Zed on that they will swap it out instead of fix it I am afraid
The rivets on it make it so that they don't really fix them
I also don't know what the replacement is
There are fixes for the looseness but require a hammer and a nail set
I myself love the Kf4 and wished I found myself carrying it more but I tend to forget it as I have to much to pick from
Also the trade Zed proposes sounds pretty good to me if you are in the market for a different type of MY
Hope you can get it sorted