David,
In my case the turkey neck went away, but the dry mouth never did. However, all things considered, it is not that bad a side effect. Even though I have the dry mouth,I snow ski and hike (with a camel pak), work out at the gym (with a cup of ice water) and play golf all the time(with a bottle of water). Not bad at all. By the way, I am back to my normal weight.
I already had high frequency hearing loss and it probably got worse from the treatments. I probably need a hearing aid but, at this point, vanity keeps me from getting one. I just do a lot of "pardon me's".
At your point I had very little taste and could not swallow well for many months. It sounds like you are doing very well.
Take care,
Danny G.