Quote ;This one can be a real pain in the butt when entering flight plan winds for a long flight, early in the flight strong Headwinds followed by later much more favourable winds, forward wind propogation "assumes" continuation of the already entered Headwinds for the entire flight, giving a repetitive "INSUFFICIENT FUEL" scratch pad message whilst you're trying to continue entering the later winds. ; unquote
Enter on the performance page manually a higher fuel load then actaully uplifted, enter winds on legs page , return to performance and DELETE the manually entered fuel figure to make sure it goes back to calculated..! No more ïnsufficent fuel during wind entries..!