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First broadcast at 07:30 23 Mar 2011
Thomas's whistle is broken but he rushes off on a delivery before it is properly fixed, and soon finds that his new one has a worryingly wacky sound.
Percy feels let down when Thomas is given an important job.
Kevin is left in charge of the steamworks.
Belle attempts to befriend Toby.
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Channel 5 Broadcasting Ltd. 2015