Aircraft Model Edit

I have a 3D model of an aircraft in FBX format complete with textures. I hired someone to separate the Aelerons, Elevator, Flaps, and Turbine Fan so that I can animate them in my game. They did not do it correctly. These parts need to have pivot points that allow us to rotate them in the correct way. This should be a quick job for someone who knows what they are doing. Please reply if interested and I'll send over the model and texture. Thanks