well, aren't the arrow's cannons gatling in the game? they certainly look it to me. You might try bringing the caliber of those guns down . . .making each barrell a little smaller. That might solve your 'too many guns' problem.
Hehe...It might be missing a couple of screws here and there but I'm not that crazy...I gotta rebuild the wings...some minor flaws.
As for the gun problem...those guns are twin laser guns from Privateer 2 . From my point of view...the more guns...the better