I have been looking for a model rocket to upscale to use a 24" long 7.5" body tube I had left over from my L3 rocket. The Estes Swift looks like a good candidate for it. I downloaded a RocSim file off of Rocketreviews.com and scaled it up and then added a 54mm motor tube and CR's, parachute, etc. For some reason the motor hangs way out the back of the rocket (not the tube). I can't see what I did wrong. Attached is my OR file. Thanks for your help in advance.