Thanks gents...........its all helping. <div>David.........Regarding the longeron/datum line the change in trim color (as above) seems to follow the point you make as well.<div>Thinn.........Based on your observations regarding the 0.5 neg horizontal stab incidence and its tendency to pitch downwards during inverted flight would you make any slight alterations to the stab angle or keep within the design spec?.</div><div>
</div><div>Thanks again gents, Bob.</div></div>