I didn't trust MK again so I used Ultra Koat and had the local PPG store match the colors. They did an outstanding job.
You might want to consider using UK and take that paint to a PPG store near you and see if they can doctor it up to match the UK.
There is just no way in hell I would ever use MK again....but I appreciate what you said about the $400....HEH....oh well, the paint is good stuff, hopefully you can rescue it and use it with the UK.

Best

Dave