Sorry you had a problem with your gun.
I have a Kimber Pro CDP II in .45 acp and I love it.
I've had it over a year, and bought it after shooting a Kimber that a man I know happen to have at the range that day.
He told me he's never had a problem either.
I daily carry my Kimber in cool weather (under coat) - in summer it's hot here and I'm sure my sweat gets on the Kimber at the range - I take it home and wipe it down with a inexpensive wipe cloth I bought at a gun show.
I added a crimson trace laser site and I love them both - lot's of shots down range now and never a burp.
Too bad I'm not a better shot
I hope you get a gun you like.