At this point you are supposed to check balance of the plane fore/aft based upon the center of gravity they call for. Instructions should be in the manual. If it is not where it should be, it is a LOT easier to remove just 2 rubber bands and then move things. Did you remember to wrap your battery pack and receiver SEPARATELY in foam to protect them from vibration? Wouldn't hurt to wrap them in Saran Wrap or similar in case fuel or water get in there. Do not coil up or bundle the receiver antenna in any way, it must be full length. NEVER cut an antenna wire, unless you are tired of the airplane. In flight you will want at least 4 rubber bands on each side (#64) running fore to aft and then one last pair running diagonally. This pair will tend to prevent the others from wanting to slide off of the dowels. Also, this is the time to stand back and operate the controls and make sure ALL controls go in the correct direction. If necessary, refer to transmitter manual for servo reversing directions. Remember the nose wheel must turn right when the rudder does. Lastly when you are satisfied that all is correct you need to stand back about 8 feet and look at your new toy. I use the word "toy" loosely, remember it can be dangerous (to you and others) if mis-handled. Put ALL of your batteries on charge. Tx, Rx, Glow plug, Elec starter, Car, whatever you got. Call your new friends and go flying WITH an instructor. PLEEEEEZE !!!! No false pride here, OK