There is a Tahnok now.
Here are a pictures:
I build two more:
This started with a head, I wanted to combine a creature head with a beast jaw and then I realized something ...
...that I could place Krana inside their head:
Then I created a body, wich leaves the head poseable and...
...also included a familiar function:
and that´s how these relatively small Bohrok Mocs came to be
Here are some pictures to show how the body and head(new version) are build:
Original and Moc side by side:
I also tried at some point to use the original Bohrok eyes but that looks just ridiculous: