Well, I finally made the tube, that connects the two tanks together and feeds the two electrical pumps.
It loops back behind and gets attached to the undercarriage brace and the small tubes feed the filters directly in front of the brace.
Close to my first attempt at welding (and using the recommended acid) - especially stainless. It's not leaking and seems strong enough...
I think it looked better before I started grinding halfheartedly
Cheers
Erik