The Spartan can be sent back to STI for warranty repair, and they'll do some upgrade work on it to make things right as well.
Can the Kimber series II safety system be removed or disabled? Would that make the gun function like the original design? Not familiar with that safety system, since no one competes using a Kimber. Which says the most about their products.
I shoot a Kimber Stainless target II in USPSA competitions, and have for a couple of years now. Not one single malfunction with the gun. Malfunctions by the operator....many