so then I have to fill the gaps in the floor/ inner arches
20170218_123837 by Stuart gaylor, on Flickr
20170218_123842 by Stuart gaylor, on Flickr
20170218_123917 by Stuart gaylor, on Flickr
20170225_144915 by Stuart gaylor, on Flickr
Not pretty but better than the rust and be ok once cleaned up (you can also see remains of welds from a badly fitted repair panel)
20170225_145033 by Stuart gaylor, on Flickr
20170305_123325 by Stuart gaylor, on Flickr