OK, I'm there too, and I've tried it once and wasn't running into any trouble (But I reset cos someone else got the kill on the Kusari Battleship) I'm flying a Dragon, with 2x Scramblers, 2x Sunfurys, 2x Tantos, 50x Starkillers.
Arm your Starkiller permanantly, so that it fires with your main cannons (I didn't do this, I just held my finger down on "Fire Torp"
. As you fly past the Battleship at about 1000m slow down to 80 and fire at it, torps will start lanching. Strafe in large swings. As you complete the first run lock onto the first shield generator, and fire torps. Fly back to the battle ships, launch more. with a little luck you should now have killed it. If not, go for next generator, take out with toprs (Or wound) and guns, and fly back to the Battleship and finish off. Then pick off the last two generators. Another way to help kill the battleship is drop Tadpoles as you fly past.
Remember that what ever you're locked onto, that's what the mines and Torps home in after.
That should enable you to do it. Then just turn off the Starkiller, and blow away the Dragon fighters and the odd gun boat.