So one of your opinions is from Mayo/an ALS specialist? I only ask since they generally don't throw out the diagnosis lightly. Without weakness or muscle wasting they are unlikely to say that's even probable. Chronic denervation in a muscle isn't ALS--it needs to be active at the time of EMG. Fasciculations that are widespread without weakness or wasting sounds more like BFS. You may have chronic muscle denervation from peripheral neuropathy, but without weakness even that sounds unlikely. How is your back? Have you had an MRI?