Convert tempo information in Logic

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I’m having issues trying to work on a remix. I have stems which are 137bpm (WAV) and I’d like to work on a 128-130 bpm remix. I’ve had immense issues in the past chopping and editing vocals within Logic, and also the pitch and groove machine makes the audio sound choppy. Surely there’s an easier way of doing thisbr
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Does anyone know an easier/cleaner process of converting the tempo of the stems within logic.br
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thanksbr