Linn LP12 45rpm adapter for 21mm pulley to exchange for a adapter for 13mm pulley...

Hello all,
I recently purchased a 45rpm adapter for my older LP12, but unfortunately it was for a 21mm pulley rather than for my TT with a 13mm pulley, so if there's anyone who has a 13mm adapter, an needs to exchange for the 21mm adapter, I will be more thank happy to do so. Please let me know.
thanks for the interest.
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