Hey Chris,
Welcome to the board. hard shifting in these cars is often caused by a lack of vacuum to the trans modulator. Too much vacuum on the other hand makes them really soft.
At the bottom of the forum is a search function that can be used with standard boolean logic i.e AND, OR, etc...
It works quite well and is a great resource for new members. On the transmission issue you can search for hard shift or upshift or the slipping that folks get is called flaring by most here.
Anyway, a search on this subject will provide you with a lot of light
reading...