the best thing to with a b400 is throw it in the dumpster..lol..those helis are total junk!!!!..the radio is decent i guess but the rest is junk...and they are way over priced..and to many people have had problems with them right out of the box..do some research before getting a heli..i did research before i bought my falcon 3d..and when i ordered it i also ordered metal upgrade ..and a 40 amp speed control and of course a new motor ..all the motors in the falcons come apart usualy the first or second flight..when i recieved my falcon and all the other stuff i opened the box pulled the heli out and i just gave the motor a little tug and low and behold the motor fell right off the metal plate..lol it pulled right out!!!so that should tell you something....right out of the box and on the bench for two nights while i installed all the upgrades ,,now this heli is totally awsome..!!!!