HI helli pros i dont know what happen with my sr im flyin is perfect out and then it makes a wierd sound in the air like gear striping is my second time flyin this bird an when i look at it the main gear is mising a few too.. i never crash it yet or anythink close to it .. i just would like to know if this happen toanybody an why? i dint get to use my other two batteries this realy sockkss im in other country in south america for vacation and nobody on lhs have this parts so im goin to place an order to helidirec and overnight this if anyone wants to tell me what other parts are recomended to get will be nice maybe some upgrades aluminun anwhere to get them ...ohh somethinkwhen i started to flyin i feel adelate in the rotor dont know if it wasme or is normal ...any help is good thankkss </p>