Here's is the rundown: Aircraft was lengthened to disperse weight more effectively (remeber to keep center of mass (COM) in front of center of lift (COL)). Small jet engines were placed near COM over the wing; power increase by 6 fold and size/weight reduced. Fuel load was significantly reduced. The horizontal stabilizer's size was increased by about 35% as well as the elevator. Vertical stabilizer was relocated outside of the slipstream to increase effectiveness. Far rear wheels were removed to allow the tail to drop for takeoff and landing. Feel free to take all the credit on this build, I only provided a few adjustments... and a couple of modded engines ;)