Welp, I just tried Yamaha's support line again and this time got the run around like they weren't even aware of the problem at all. They kept telling me to do more troubleshooting even after I listed all of the steps I took along with the results, and said the only thing they could do was refer me to an authorized service center here in my local area.
Does anyone have a specific number I need to be using when calling Yamaha for this? This is beyond irritating. The "tech support" guy as he called himself wasn't even interested in trying to remedy this in any way, shape, or form and right now I'm about two nanometers from being a former Yamaha customer. Frustration doesn't even begin to describe what I feel right now. $2k is far too much to spend on something that didn't even last more than a hair longer than six years. That isn't quality in my book.
When a Priest says they're going to Flash you, it isn't for healing.