Disclaimer: this is some high-level devil's advocate rules lawyering. I'm not suggesting that this is the way the game should be played... merely considering rules-as-written and how they actually apply to certain cards.
When a card uses the term "this attack," what is the full scope of that phrase? Is it the ENTIRE attack timing chart, or only select steps (steps 2-7, for example)? The reason I bring it up: Accuracy Corrector states that, after using its ability, "...your dice cannot be modified again during this attack." If the scope of "this attack" ends after the first shot of a double-shot weapon like Twin Laser Turret or Cluster Missiles, the Accuracy Corrector would work as normal on the second shot - a reasonable interpretation.
BUT, if it includes the entire timing chart, everything can go haywire. It means that, for any other upcoming dice rolls caused by that run through the attack chart, NO MODIFICATIONS can be made on ANY of your dice. Need to make that second Cluster Missiles shot? You're rolling naked dice. Maybe you have Gunner on board? Hope for hits-n-crits. And if you're shooting at Dengar or Quickdraw, well, I hope you trust your green dice more than I trust mine.
Your opinions?