New Clutch and Flywheel Slipping?:(:(

Just put in a new clutch and flywheel, but just over 300 miles on it and my clutch is already slipping, what could this be?
My clutch is set to engage pretty high, So I'm wondering if the clutch remains engaged at all times slightly and is not fully disengaging.

Any thoughts
Fidanza Flywheel on an OEM grade Clutch. 01 AE Maxima.

Any imput would be greatly appreciated!!!