Randy It just will not take a needle, eather to fast or to slow, that what 's so puzzleing, as Both of mine runs great . I'm thinking that it might not have enough time on it yet. but when I change his prop to mine it works, take of one lap then 4cyc, but with his bolli were ever it's set it stays on the ground but when it unloads it flys fast, when richen it up it flys to slow!