[iknowsquat]

RINGERS

This is preliminary at best so no promises.
My ringer went down, no combination of changes with/without Sense enabled would bring it back.
I did notice that when I changed it with Sense off, then enabled Sense my choice would not stick.
So I turned off Sense. Made a new ringer selection. Did a soft reset with Sense OFF. Then enabled Sense after the reset and my choice stuck.
I then turned Sense off again. Ran Keep My Tones and backed up all Contact Ringers and Notifications.
Made a selection. Enabled Sense. Ringer worked. Disabled Sense. Made a new selection. Enabled Sense. Selection stuck.
Still dont know if this is a customized ringtone issue or not.

So IF your Ringer goes down. Disable Sense. Run the KMT restore. Make a new selection. Soft reset. Enable Sense. Pray.

That's as much "sense" as I can make of it at the moment. Only time will tell.