That's not remotely helpful at all, sorry. Problems center entirely around the hit/no-hit spewing out falsehoods left and right on where you can strike from. (Which is I suppose easily written off the first time as bad intel/interp, but something tells me it ain't going to change after the first time.) Even from inside the arms and nearly perpendicular the effectiveness of KEW fire on the launchers seems semi-random, and the effectiveness of missiles even more so.
And the main-body ones are fraking magical. I know they can be damaged, because I've seen them drop a percent on occasion and I hit one with a missile once, but I have yet to reliably establish from what angles. Everything from straight perpendicular to grazing gives a "you can hit me" but none of them actually appear to work.