See attached.
The problem is the inner plates are tack welded on with short fillets. In fact some of the fillets are not even on the join!!!
There are huge gaps that dont allow for easy painting but do allow for water/salt ingress.
From what I could see there was no primer on the metalwork either.
Pic is of repair to support brackets. Beware do not over tighten or even tighten the two bolts

Attached Images
image.jpeg (959.93 KB, 88 downloads)