I find it best to work from the point in the centre of the fin outwards in both directions.

Now repeat on the other side, and then carefully open up the holes for the two bolts that will be used to hold them to the tail gear box.

Then screw down so that the vertical fin is firmly fitted to the tail gearbox.

Before we can fit the tail control rod, we still have it holding our rubber drive belt safely (don't we ?), so we need to get the belt over the tail driven gear in the correct orientation, and then we can sort the control rod out.  Before we do that however, you need to slide the tail control rod holder down over the boom, as we will not be able to do that once we insert the boom into the back of the frame.

So first you slide the boom gently into the boom holders at the rear of the frame, twisting it slightly to ensure the slot in the boom goes on the left and it fits over the locating lug, and while keeping that belt from twisting until the boom is far enough in to allow you to put the drive belt over the tail driven gear.  If you cannot make the boom go in far enough, remove the screws holding the rear boom mount and then push the boom in further until the belt will fit over the tail driven gear.

Once the boom is in far enough, and you can slip the belt over the driven gear, what you need to achieve is that when the rotor head is spun clockwise, the tail rotors spin the correct way around, and that is ANTI CLOCKWISE when viewed from the RIGHT HAND SIDE of the helicopter.  In other words, the tail rotor blades rotate so that they climb UP into the downwash of the MAIN ROTORS.

So first of all, try to fit the belt over the driven gear, and see which way the tail rotors turn. If they are wrong, you need to take it off and turn the belt through 90 degrees,  but MAKE SURE YOU DO NOT TWIST IT THE SAME WAY TWICE, or the tail drive belt will bind.

Refit it and once all is well, reposition the rear boom mounting if you released it, then pull the boom out just enough to tension the drive belt.  Then fit and tighten the nuts on the two long bolts on the rear boom clamps.  Check the tension of the belt with a small screwdriver or pencil. You should only be able to push the drive belt sideways enough so that it cannot actually touch the other side of the belt. When correct, add thread lock and clamp the nuts fully, and fully tighten the self tapping screws as well. 

Now we can fit the boom support rods between the frame and the horizontal stabilizer. For this you need to find that remaining long alloy spacer, as it goes between the frame when you mount the support arms.

	Take the two carbon rods, and using come CA glue, fit the white ends to ONE end only at this time. Then fit them to the frame as shown on the left.
Then use some CA glue to fit the white ends to the other end of the support rods, ensuring that they line up vertically with the sides of the white clamp for the horizontal stabilizer.

The finished boom support and horizontal stabilizer.

AND THIS IS WHAT YOU SHOULD BE SEEING NOW...

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