Is it possible? I have a rocket that I stretched from a CC Express and was wondering if it was possible to use an extra bottom stage from a CC Express to stage this one. Is this too much weight for that D to lift-off the pad? The rocket, loaded, weighs-in at 8.4 ounces. The CG is well ahead of the CP but I'm just wondering about the D's ability to get it off the pad. I have a sim program, but I'm still learning it and was hoping to tap into some experience here.