Joe,
> found a good solution.
There are a bunch of possible solutions, none of them perfect.

> Is there any way to divide the fuel return so it can be
> returned to both tanks?
The most common solution is probably a double throw valve. Bulent Alieve has
a source of fairly inexpensive ones. I installed a solenoid which sends the
return to the right tank when off, left when energized. I energize it with
the left tank fuel pump switch. This way I have independant fuel supplies,
pumps and filters. The solenoid weighs a couple of pounds. See details &
pictures in http://kgarden.com/cozy/chap21b.htm search for hydraulics.

> One could pump fuel from the right tank to the
> fuel rail and the other could transfer fuel from the left tank to the
> right tank depending on the fuel flow being pumped from the right
> tank?
I considered something similar, including the timed facet pump transfer
approach, but decided I wanted total redundancy in the fuel system.
Regards,
John Slade
Cozy IV