I do miss my Gravity rider - Antares Class! I built it as close to the instructions as I could fathom. It was very forgiving. My forward fins instead of being angled/aligned with the rear fins were instead level/parallel to the dual body tubes. Also, it was the model of redundancy, as it was dual engined, it was also dual parachuted! This was my first rocket that I build a baffle for (only on one side). She was one of the fastest rockets I've ever seen off the pad! I flew her on B's and C's, fast and straight up!
However, the dual parachute designed didn't work great. At start of descent they looked great, but invariably would find a way to wrap around each other. That being said, they were still filled enough to gently lower her to the grass.
Alas, I lost her in one of the most hated ways possible, a tragic accident in the garage involving some piled too high and heavy packing boxes. Her snapped fins and mangled body tubes await salvage in a forlorn corner now. I figure I'll take out the chutes and the baffle and one day build another one.
If you stayed close to the instructions, she'll fly beautifully for you. Let us know.....