Think I found it....
The initial master nodes names needs to match exactly what is in the first elasticsearch.yml
I think this all comes from you initially manually setting the node name on the initial node which does not match the host name.
See here for details from the docs
Try commenting out the node name in the first elasticsearch.yml ... In short, don't set the node name unless you really know what you're doing let that be done automatically
Restart The first node.
Then do a clean install and token on the second.
I should have seen / asked this earlier...