Posted for "Bob Pastusek" <rpastusek@htii.com>:

Gary,

You can make a case for adjusting the tailplane angle of incidence to
correct your problem, but there are a number of fairly important
considerations. Perhaps the most important is the low speed handling and
stall response. Changing the tailplane incidence directly affects this, so
it would be wise to consult the designer or a knowledgeable aero engineer if
you don't have this background. Before making any permanent changes, even to
include modifying the trim tab, you might want to check the cruise, TO and
landing (with and w/o flaps) handling and "feel" at forward and aft CGs, and
expected/max operating weights before making permanent mods. You might be
able to adjust your trim tab linkage to give more travel in the deficient
direction to ease stick forces while you're going through these. As with
other things you've likely discovered during building, it's easy to create a
new problem while solving the current one.

Good Luck!

Bob Pastusek