It all started when I broke the set of main blades that came with the heli. After replacing the baldes the heli vibrated alittle when throttling up. No problem, I understand that simply because you put new blades on a heli doesnt mean they are a matched pair, so I matched a pair up as perfectly as I could. When I throttled up there was a very slight vibration again but nothing that would mess up or throw off the helis flight (I've flone before with this VIBRATION with no problems). Well' after I throttle up, giving mor power, I begin to lift off, the vibration goes away. Once I get about 2 feet off the floor, the heli flys normally for a couple seconds then suddenly, the whole heli, from head to tail begins to wobble violently to a point where with a new charged 7.4 lipo battery, it wouldnt ascend anymore and I have to bring it down quickly before it crashes to the ground! I've been trying to figure this problem out all weekend! I've taken it apart when I discoverd the frame was broke, changed rotor heads, flybar blades, and checked the shaft when it was apart to see if it was broken but it wasnt!. This heli seems to be plagued with those violent, in flight wobbles!! What else could it be??!!! I have an extra lipo. I'll put that one on to see if theres any difference...HELP[X(][]