My second Millennial Flerken is history. Dang. I love flying that thing. The only problem I have with the Flerken is finding center of gravity. My first flight with this one was nose heavy ending in shredding a wing on a power line. After repairs I found the cog and had several really great flights. The nose got crunched on one bad flight (tail heavy). I found the cog again and had several more great flights. This last flight was tail heavy and did the take off loop into the ground thing. Split open like a hard boiled egg. I swear I had the battery within a quarter inch of the last flight's position. The cog seems to move from flight to flight (which is ridiculous unless something physically changed about the wing. Have any of you Flerken flyers had any problems with cog? I have ordered another one, I love flying it so much. I would like to have one that flies, uncrashed, for long awhile.