See the movie Chitty Chitty Bang Bang? This baby drives, flies and swims. It bombs. It will climb mountains straight up. Perfectly balanced... Use engine pair 8 only for VTOL... 96% is the tipping point for take off... bound around like you're on the moon. Add engine 7 for a vertical boost. Rotating thrusters are on rotators so check your VTOL... You can rotate 360-degress... use downward thrust with car engine to turn at any speed without flipping... or modulate downward and forward thrust to climb mountains (slowly... or you'll break up). She'll float... use engine 6 to troll (yaw to turn, roll to fight rolling)... go slow. She'll fly straight up or use her as a hover gun ship with 8x mini guns. I spent hours balancing this thing, so save it as-is before you start tinkering. Here are the controls: 1 & 2 release hidden bombs underneath. 3 tosses top bomb (hint, while you're hovering, just tilt forward to lob it). 4 is a set of chutes and 5 is a second set of chutes (so you have more than one "save" up your sleeve). 6 is forward thrusters on back. 8 is your main pair of VTOL and 7 is a third VTOL to toggle in and out to give you extra upward thrust. That's it... have fun experimenting. This is meant to be super versital. Hope it's as much fun driving, flying, boating as it was for me to build.