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Bob,

I've previously had lower back surgery after excess hours and G in a far
less comfortable aircraft (F/A-18).  Hence, I was extremely sensitive about
my seat support.

I didn't do any changes to the basic shell.  The advice I followed was to
use Temperfoam!  I used 3" under the seat. (hard, medium, & soft) and 2"
behind the back (medium, and soft).  Additionally, I slivered in a lumbar
support of 1/2" thick by about 5 inches high between to back layers.

Bottom line.  Extreme comfort!  The only downside is the ice cold mornings
which take the first 1/2 hour or so to thaw and soften the cushions
(lowering design eye position to it's proper level).

I've got a lot left over and the stuff costs a fortune.  It was worth it to
me.

Larry Henney
N360LH

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