While working on a larger ship (around 250m and 70,000 blocks or something), I noticed the D1000s were firing incorrectly. Mounted towards the front of the ship, they were firing almost straight backwards. I tried mounting cockpits in different facings around the ship, and found that the missiles always fired backwards relative to the view of the cockpit. Experimenting with placing the missiles in different positions around the ship, I found that they seem to be firing at the ship's core (when firing from a forward facing cockpit). This is the case with all three missile types. No changes to the missile computer's position or facing seem to have any effect.