Funny you posted this because I certified level 1 last weekend with my Badd Azz Zztarfire which has similar swept back fins. During landing the rocket came down on the edge of one of the fins on hard packed clay flexing it hard causing the paint to crack. If the fins weren't fiberglass and the filets weren't silicon bead reinforced I would have broken a fin. That would have ruined an otherwise perfect flight. Dustin you may want to keep that in mind.
N.A.R. # 93858
Level 1: Badd Azz Rocketry -Zztarfire
“We will never be an advanced civilization as long as rain showers can delay the launching of a space rocket” George Carlin