I have an apache AH-64

these are my problems:
My bottom (B)blades doesn't spin sometime, like when in good flight the bottom blade stop spin and turns so crazy and crash to the ground...
now I open it... there's a new problem
the top motor which spin (A) blades, it keep making cracking sound when it spin, but when the motor and the rotor (not sure what it's call the circle think that connects to the motor or engine) separate, it goes smoothly but when it's connect it makes cracking sound so please help me

oh wait this is the only problem now... the motor just doesn't spin at all. the motor that parrallel wih the (B) rotor, I try reconnect erything through its motherboard(fliping backward change with each other still not work... I think the motor broke but not sure. if it is can you tell me where to buy placement for it?

helicopter heaven should have them in stock. theyre cheap.

check the gear mesh also, the gears might be broken or binding.

<div style="margin: 0in 0in 0pt"><span style="font-size: 9pt">It's really disappointing to spend your hard earned money for a product and get ripped off. I had abad experience with helicopterheaven.com I purchased an eflite blade cx3 from <span style="color: black">helicopter</span> heaven and I received a helicopter that was used. The canopy had glue and scratches all over it; the top of the canopy was ripped, and the motor wouldn't work. I took it to a hobby shop about 40 miles one way from my home; the guys at the hobby shop were able to get it to start but when they did they said the 3 in one gyro was damaged and the inner shaft was bent. I phoned the companyand toldSteve the unit was used but he denied it. He said he damaged the canopy while installing lights. He new the helicopter was damaged but he sold it me anyway. The light job was shabby; there was glue from a hot glue gun all over the canopy and any where a light was installed glue bulged out around it. I looked like a kid had attempted to install the lights. The instruction manual also had writing inside of it as if a kid had drawn lines inside of the book.

If he test the units I wonder why I stayed on the phone with him for about an hour attempting to bind a supposedly RTF ready to fly helicopter to a transmitter that wouldn't bind. He couldn't walk me through the process to get the helicopter to successfully operate. The helicopter wouldn't work until I took it to the hobby shop to find out it was damaged. </span></div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt"></div>