I was thinking of getting an Estes Gemini DC and clustering it by putting an 18mm motor in each of the "parachute tubes". I already know I will have to add some noseweight (at least 1oz) to keep it stable because I hear they are hardly stable with one motor. But I was wondering if I cut those outboard tubes down a few inches will that will help to push the CG farther forward? Also, what do you think about igniting a 24mm motor in the center along with the two 18mm motors, this may require adding more length to it too. Or I could just ignite the two 18mm outboards and vent their charge through those little holes that are already there if I plug the rear of it with a used motor. This rocket has a lot of potential. Any suggestions??