Just had the same problem myself not too long ago. It should be
#+PROPERTY: header-args :tangle emacs-guivho.el
#+PROPERTY: header-args+ :padline yes
#+PROPERTY: header-args+ :eval never
#+PROPERTY: header-args+ :eval no
#+PROPERTY: header-args+ :exports code
Be sure also to hit C-c somewhere in the header after updating them too,
so that Org is aware of the change.