Must be as many ways to set up the fuel transfer system as there are
builders. Except for the (hopefully) few that do not utilize a header and
feed from both wings simultaneously (see Ian Crowe's comments), all the
methods described sound quite safe and workable.

FWIW, here's another method, i.e., how I plumbed mine:

Lines from each wing tank are connected to a manual right/left selector
valve. From the valve, a single line goes to two Facet pumps in series, for
redundancy (I've had one fail early on when I had only a single pump so I
added the second one), which then pumps fuel to the header. The Facet pumps
allow pump-through even when not energized like the "boost" pump backing up
the engine mechanical pump so failure of one doesn't completely fail the
transfer system - and even with a single pump failure, I can still get at
the fuel in both wing tanks.

Yes, I must manage the wing tank fuel use by manually switching the selector
valve but find it easy to do. I have a single pump switch for fuel transfer
(the transfer pumps are wired in parallel) and an indicator to warn when the
header tank is full.

An automatic system for keeping the header full, as several have installed,
sounds really neat - unfortunately I didn't think of that before I closed
and installed my header on my older 235 and my header isn't removeable like
the later design. You work with what you have, I guess.

Dan Schaefer