I know the NWT -
Do you have a personal copy?
and I'm presuming you are a JW -
Not all unitarians who believe that Jesus is a god is a Jw.
would contest the verse from John; translating it as "the word was a god",
Because that is the most grammatically correct translation.
but this contradicts another Scripture -
"Before me no god was formed, nor will there be one after me." (Isaiah 43:10)
Contradiction if you don't consider the other uses of theos/elohim in the Bible.