Posted for "terrence o'neill" <troneill@charter.net>:

 A 'P.S.' to Scott's:
For less worry about header gas, go to www.fuelsafe.com.
 Terrence
 Lancair N211AL IO320 (99%)
 Greenville, IL GRE

"""
  I am not suggesting you consider a header tank - there are some that are
nervous about it becoming an anti-fungal foot bath.  For airplanes with two
wings but more than two tanks, I would transfer pump the aux tank(s) to the
wing(s), thus a simpler system that makes more fuel usable.
"""