Steven,
I'm happy to hear you are doing well. Don't let the bad news and recurrence stuff get you down or make you crazy. It is just a topic that all cancer patients have to face sometime or another. We just tend to pay more attention to it after we have fought the beast.
Thick stringy saliva. It's a result of injury to the salivary glands as a result of the chemo and radiation treatment. This can take a long time to improve and unfortunatly for some it never does. I'll send you some info on a future post on things you can do to try and deal with it and possibly improve it.
Throat pain. Can be a result of treatment, chemo and radiation I suggest you talk to your Dr.'s.
Neuropathy and numbness can be the result of chemo and will usually improve, once again, talk to your Dr.'s.
Pain in neck and chest. Did you have a neck dissection surgery as part of your treatment?
If so, this could be a result of that.
Do you have follow-up evaluation scheduled? Ask these questions.

The internet can be a great source of good information. I have found that there is also a wealth of inaccurate and wrong information on many sites that can scare the hell out of people. Be careful what you believe.
Remeber, every cancer is different, every patient is different, and every treatment will affect people in different ways.

I hope this is of some use to you.
E-mail or PM me anytime.

Cheers,

Mike