Rubbing noise after installing new front struts

I hear a slight rubbing noise like a tire or strut it rubbing something or a strut groaning after installing the new front struts on my 2010 prius.This happens when i just move the car in the morning not necessary when i brake or accelerate. what is rather strange is that it only happens in the morning when I'm leaving to work , after sitting all night. Can be pretty random like on my lunch I've been hearing it more, but after driving for a while it goes away. Any idea on what this could be ? I torqued everything to spec when installing the new struts and got an alignment at a shop .