It is not very pretty, but the Hogue rubber grip with finger wraps will provide a larger grip for you. You can buy them through different online stores including www.ajaxgrips.com. Good luck.
Does your Kimber have a straight mainspring housing? Sometimes changing to an arched housing or Ed Brown's wedge design can make all the difference in the world.
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Politically, Fashionably and Aerodynamically Incorrect!
The Hogue grip is most excellent. While not as sexy as a nicely marbled piece of exotic wood - it Feels good in the hand.
I recomend them highly. In fact - a single stack 1911 with the Hogue feels better in my hand than any other pistol out there.