"Its not that I have a lack of faith, I am asking how it is possible that the spirit of truth, if you object to the word ghost, has not done even one single thing that Jesus said God would send the holy spirit to do if he already has come?"
It is not my personal objection to using the word holy ghost. Different cultures have different words to explain what a spirit is. You covered it nicely describing "disembodied spirits" as to where the problem may lie for some who are confused. The holy spirit is not some disembodied creature it is a little piece of heavenly treasure that is installed from the manufacture.
Did you read John 16:8-15? Read it again and tell me if Jesus is describing God sending another human being and what he would be sent by God to do, or if Jesus describing what an invisible spirit would be sent by God to do?
"Jesus mentions specific things that the spirit of truth would do that have not been done so how do you explain that fact with the claim that he has already come a very long time ago?"
You are speaking corporately for the whole when it has to be put on an individual basis. Not all are restored at that same point in time.
No, Jesus clearly says that the the Jews would be convinced that Jesus was right when the spirit of truth came. He is predicting his teaching being vindicated and accepted by the entire nation of Israel after being convinced that Jesus was right, not after 2000 or 10000 years depending where they each are at individually.
Lets face it, if Christians are going to continue to insist that Jesus was God or that Jesus claimed to be God the Jewish people as a whole will never be convinced that Jesus was right about anything and will probably continue to think that you have all been placed under a delusion and are lost and gone forever.
Your claims about Jesus being God in the flesh that you profess to be inspired by the holy spirit will only continue to convince the Jewish people that Jesus was insane and they were always right to reject his teaching out of hand.
The exact opposite of what Jesus said that the Spirit of truth would be sent by God to do...