Mk I Viper Launch (09-20-2022)

I launched the Mk I Viper at a 30 degree angle. Gross liftoff mass was ~ 1.3 kg. Liftoff velocity was between 3 and 4 m/sec. I expected the Mk I Viper nose to pitch up after leaving the rail guide but it pitched down instead. In slow motion, I observed a small amount of rudder control. The Mk I Viper appeared to yaw a little to port