Can't get my firewall off, stuck like glue!

Hi All
Just trying to remove my firewall on my type4 to check the fuel sender. I've undone the 6 bolts on the front of the firewall, are there anymore cos it ain't budging?cheers

 

Theres two screws on the underside
There normally very corroded

 

Thanks paradox

 

Think there should have been a warning sticker on the panel advising of those two screws....the grief they must have caused in later years through not knowing.

 

Yup! Been there, got that T shirt.