im 2 and a half years out of treatment and my spit glands seem to be trying to work again, there is actually days i can spit, i know that sounds groce but to me im excited about it, has any one else experienced this going from a mouth so dry u could pull dust balls out to actually being able to spit, there is times it is thick but they seem to be trying to come back, every thing i have read and have been told once you loose them there gone, is this just a temp. thing or can they come back?