I would start by checking your TurboTax entries for your W-2 and making sure you entered the numbers correctly for Boxes 15-17. Make sure the withholding in Box 17 matches the state name in Box 15.
Also, make sure you complete your non-resident MO state return first, before you do your home state KS return.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.