I stopped worrying about grades since primary! Not that they aren't important....its just that I dont see the point of stressing out about it in Advanced Jets. There is alot that goes into your selection out of advanced. Now, for Navy guys, we can only select Two types of A/C...hornets or prowlers.....and really....most of us will be flying hornets whether we want too or not.
Of course the other thing about grades...which I learned in primary...has more to do with who you fly with, than how you do.......We all have bad days and good days...but depending who you fly with it could be a two above or a one below(4 fives or Mif for you primary studs)...and thats the truth!