The next step they tell you to do is mount the landing gear...DONT. Install the landing gear last. The way the Rogue3D is constructed, you will have to remove the landing gear to get the wings off. This is a real pain, so leave the landing gear off for now. It makes access to the inside of the plane for radio installation much easier.

Now you want to mount the motor. The Rogue3D comes with mounts for outrunner motors, inrunner motors, and even a OS .15LA glow engine. Your choice. I want lots of power on this little plane, so I chose E-flite's 480 sized outrunner. If you are installing a electric motor. Construct the motor box using rubber bands to hold it together and TEST FIT IT before gluing in place. You need to check to make sure that the designed thrust angles are correct, and that the cowl will match up to the motor. I, like those before me, found that you need to mount the outrunner box upside down with the side and top panels reversed so that the cowl will match up correctly. Be sure to check to see that the thrust angles are correct before gluing it up.