Well, since you praise the A-wing...I will help you.
Are you destroying the black bunkers too early? If you blow them up before Rieekan says, 'Thanks Rogue Group, I'm clear!' you also blow up the stormtroopers inside...wait until after, then shoot them as they're running outside for maximum points.
Are you getting all three groups of probe droids?
Also, I think you get more enemies when you enter the passcode ACE
. Could make the difference for you.
Hope you win the gold.
'Rieekan, this is the commander! It's imperative that you kiss my fuzzy pink @$$...!'