It may also help to adjust the horizontal position of the saddle... move it either backwards or forwards on the the rails. The down side is... when you do this you also effectively alter the bend in your knee. Closer to the BB axis will mean more bend, away from the axis will mean a straighter leg... so you may have to adjust the height again! Moving it forward will help with cadence, moving it back will help with pedalling power. Of course, this will also change your reach to the bars... so some tinkering there will be called for....

It is all about very fine tuning.