No need to bother Emeth. We don't need to waste time memorizing counterfeit money, we just need to know what is true and cast out the rest.
There is no way to KNOW the pronunciation of God's name. If GOD wanted us to know it, then he would have preserved the pronunciation via holy spirit. If any " lost truth " were to be re-discovered ( LOL!!), you would think that God's name would be one of them! Instead the WT accurately states that JEHOVAH (tm) is less accurate than even YAHWEH, and even YAHWEH is a guess. Also, JEHOVAH (tm) does not occur anywhere in any of the OLDEST EXTANT MSS. Once you realize that JEHOVAH (tm) is a brand name, like Nike or Pepsi, the rest is easy.
Also, why would Christ's brothers, leaders of the ONE TRUE RELIGION, need to lie or deceive or misquote sources in an effort to prove that JEHOVAH(tm) is God's name, especially when they have already admitted that it is unknown? Think of it this way. If you were in a court of law, and had sworn on the Bible to tell the truth, what would say if the Judge asked you, " Is JEHOVAH God's name?" Be honest now, God is watching...
There is no lie in truth. It's that simple.