MkI Viper Launch, August 26, 2024

This month I had three launches of the MkI Viper. I replaced the PLA canopy with the fiberglass canopy and calculated the center of mass to be at 3.4 cm with the thrust vector at 3.5 cm. The MkI Viper cleared the rail guide, continued to about 30 feet before pitching up, did a few flips, and landed ~ 15 feet from me.
After careful review of the videos from this month, I surmise that the thrust vector and center of mass are aligned. Also, I believe it has become an issue of air drag. The Viper clears the rail guide and begins to pitch up as it is gaining velocity. I plan on initializing the flaps in the down position to counter the air drag on top.