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Old 07-11-17, 08:32 PM   #5
Colin Aitchison
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Join Date: Dec 2013
Location: Back home in Tillicoultry
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New rotor would be my first port of call, the rotor arm has a rev limiter built into it and the spring may have went week with age, a quick test would bet to super glue the rotor arm so the rev limiter is disabled.
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