(Solved) Strange font in MCC after upgrade to Mga8

After the upgrade to Mga8 I have one small cosmetic problem. The font used in MCC appears to be 10 pt A.D Mono. See: http://dennis.homelinuxserver.org/mcc-font.png
This makes it very hard to read. Previous versions of KDE had a setting where fonts in GTK programs could be specified. I changed the GTK theme in system settings/Application Style but it had no effect on MCC. The fonts in other GTK programs (GIMP, Firefox, etc) work fine. Where is the setting to fix the MCC font?
This makes it very hard to read. Previous versions of KDE had a setting where fonts in GTK programs could be specified. I changed the GTK theme in system settings/Application Style but it had no effect on MCC. The fonts in other GTK programs (GIMP, Firefox, etc) work fine. Where is the setting to fix the MCC font?