Hey whatsup, I just got a K3 and I have the exact same problem. I sent it to technicolor and got it digitized and the 48fps clips are crap, they jump around as you described. the cam has a problem with that. i havent been able to determine the problem yet either. i can assure you its got nothing to do with the tripod. the mechanicals inside are whats F***ing things up. ill post a clip of the problems soon. tell me if you found a solution yet