Hey everyone - I recently bought the Phantom 2 Vision (9450) props for my Phantom 1. I put them on and took my Phantom out for a test run. I noticed immediately that the Phantom was more unstable than with the original 8" props. Reading this forum, I would say that it was oscillating (but not to the point where it crashed) - however there were times where it was completely stable. This occurred with the default gain settings (for the 8" props). I'm a little scared to increase my Basic gain settings because I've read that you're suppose to increase them until the quad starts oscillating..and it's already doing that. It was slightly windy today so I'm not sure if that played a role but I haven't had a significant issue with similar winds using my stock props. One other thing is that I haven't balanced my props (waiting on a prop balancer), could that cause fairly significant oscillations? I hope that made sense. Thanks for your help!