KPIE - Author forgot the Tower

I recently purchased KPIE, St. Pete/Clearwater International Airport. I did so much of my flying in that region during the 1970s. Unfortunately the author forgot to include the tower! Does anyone know how to get in touch with the authors or is this a matter for ZenDesk? If ZenDesk how do I notify them?

Hi there,
I stumbled upon this older post. But since nobody answered it, I just wanted to mention that their contact information is on this page. Zendesk will not help you for third-party items like this.