Damn! It's been awahile! Everything seems to be in order (with me). Playing steam version of Apocalypse and I notice something in the firing arc mechanics. Doing testing now. I think the whole arc thing is borked! I have a car (go to point) that only fires north (overhead cityscape view) and the missile will 'sidewinder' northwards (no lock) with the target (Overspawn) being directly south (in range, low-mid altitude, aggressive) but if i 'go to point' south of the target and position northwards pointing, the Jani will lock and hit after coming out on the hovercar directly north.
Jani firing arc is claimed 3 and 4 (Apoc'd v3.06) and 135deg. The problem I have noticed is when the craft fires a missile it ejects it directly north irrelevant which way the air vehicle is pointing.
ALLRIGHTY... found a new bug!
If you 'go to map point' a vehicle (any aggression or altitude) to make it fire on an enemy (like a slow overspawn) then it will fire its guns (in this case I used a standard hovercar) like you'd expect but missiles will eject directly north of the vehicle irrelevant of arc setting or orientation of the launching craft. If the arc setting is 8,8 (Apco'd) then the missile will still eject directly north (the bug) but will fly a turn to bear down on the enemy. If the arc setting is 3,4 (default) then the missile will continue northwards in a sidewinder motion (ie: a no-lock dud).
if you use 'attack enemy' button instead of 'fly to map point' button then the missiles will fire directly at the enemy (as long as its arc setting allows it to relevant to the vehicle orientation) like normal and just like you'd expect!
Don't use missiles AND 'go to map point' unless your attacking vehicle is somewhere south of the target. A stationary gun platform in the air works well, just switch of the missiles unless its north of you!