I installed a Wilson BulletProof slide stop in my Ultra Carry after the factory part cracked at 1000 rounds. I had to remove a slight amount of meterial from the lobe to allow hardball rounds to slide by without making contact. It took about 5 minutes.
The problem with your Kimber is those MIM parts, which are manufactured by melting powdered metal and molding it into the parts. They aren't the best parts in the world. Replace your slide lock and that should fix your Kimber. I have a Kimber Custom Combat Carry Model, which is the 4" melted stainless slide, on the alloy frame. It is a sweet guns and I think very highly of it. It has not malfunctioned as of yet and is definitley a keeper. I plan on replacing the slide lock when it screws up. This is no big deal. But you would think, that on a gun that cost over a grand, that they would use decent parts on the thing in the first place.