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Look at the fore and aft relationship of the sensors and fuel tank levels
when in climb and descent. I notice a couple of inches of level change,
for example, when in descent at moderate 200 to 300 fpm range. I have a
sight gauge on the day tank, and a small sump at the rear of it with the
engine fuel take off line on the bottom. My SOP is to run my 12 gal day
tank between 10.5 to 11 gals and 5 to 6 gal. Turn both Facet Pumps on at
the same time, and time each pumping sequence. No selector valves, no
retrimming the A/C due to uneven wing loading, and a very simple system to
manage. I do have a high level warning sensor at about the 11 gal level,
If I dope off.  KISS, it works for me..The MT 3 blade "105" design is
looking very good, more later after a few more hours..                                          Don Skeele (dpske@Teleport.com)                                                  235/320 w/600 hrs.
N320J

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Please send your photos and drawings to marvkaye@olsusa.com.