Hi, I have the front panel audio connectors on the A7N8X-E Deluxe connected to the front speaker and mic jacks of my case. I love this feature because I have speakers connected to the back audio jack and when I want privacy, I plug-in my headphones to the front audio jack and the speakers go silent. However, I recently noticed that the right audio channel from the back motherboard jack was mute. I don't remember this ever being an issue as I have used this configuration for some time. When I plug in my headphones in the front, both channels are present. I thought this was a motherboard issue and got my it replaced from Asus, but again ended up with the same problem. Is it possible that the Return R and L audio leads from the case audio jacks might be defective? Any help would be greatly appreciated. TIA.