March 17th, 2010 
wcharly I bought an RC Helicopter from Amazon here.
http://www.amazon.com/Performer-Helicopter-Infrared-Remote-Control/dp/B0010VGB6A
It flew really good when it came out of the box but after a couple of crashes, it keeps flying in circles. How do I make it fly straight again?
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sounds like the tail blade isnt spinning fast enough. probs got a hair all coiled around the small thin bit of metal. you need to uncoil the hair and then re-trim your helicopter. you may even have to take off the rear blade and put it back on to fix it.
Have you crashed it? Check the tail end of it to see if the roters or the wings are crooked.
Make sure fully charged and try again!
If that doesnt work youve wrecked it
check ALL the propellers to make sure they are spinning and moving in the same direction as before
Couldnt you put a more powerful tail motor on it