2nd to 3rd gear is the adjustment made on the side of the trany. There is no magic trick to make it shift. You have to adjust the clutches until you get it to shift. Also engine RPM is important as well. If you have your engine running too rich and not producing enough horsepower then you will not get a shift.

You can also try a mod that a customer submitted to us. Here are the pictures of the mod he did: