The Series 1, or pre series II is a much better gun than the series II!!
The difference is no Swartz safety and much better build quality.
You did GOOD!!!!
Remember if you have feed problems first try a Colt mag. If that doesn't clear it up then get a Wolff spring specifically for the Kimber 4 inchers. Last resort try a Wilson Combat mag. I almost guaranty that it will work fine. If not the remedies above will take care of issues.
Take this for what it is worth;
I hate Kimbers. New Kimbers that is. But I'd own that gun in a heartbeat, especially with the Crimson trace Grips.