My second 1965 Dodge Dart.

So, this morning I went to O'Reilly's and got a set of Trico Classic 33-150 wiper blades. They are a little longer than the ones who were on the car, but they look very good. However, the wiper on the passenger side does not wipe in the middle. The arm does not have enough pressure to straighten the blade. So, how do I fix this ?

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