1997 VW Eurovan hard shifting.

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Hi, my 1997 VW Eurovan hard shifting from 1st to 2nd and third gear is too short. I went to transmission shop and they said this is a valve body. They change it but it didn't work. Next they said they need to rebuild transmission. They did it but it didn't work two. After that they said I need a new transmission control module. I bought it but it still doesn't work. Any suggestions. Thank you very much.