Google Nexus 6 :: Custom Notifications Not Playing On 6.0?

my new Nexus 6, but I'm noticing an issue with my custom notification ringtones or sounds. I have a custom Ringtone for my Calls, that plays fine, but the Notifications for my Voicemail and Texts is not playing or Plays once the first time, then defaults back to the barely audible notification sound on the N6.

I wiped cache partition and did a factory reset before setting up the phone after the final OTA of 6.0 the day I received the phone. I'm going to try to wipe Cache Partition once again, because I saw in another Notification thread to try it.

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