I got some manual of the internet on how to take out the bottom off the back seat. I got it off and installed the seat covers. How do I reinstall the seat. Instructions say attach rear hooks then push down to attach front. I attached the rear hooks but can not just push down on the seat to install the front. Sitting on it does not let it latch on. Anyone know how to make the front latch on? This is on 2010 Prius. I got the u tubes going inside the white connectors but they will not latch on. Is there a trick? Seat is faom and Styrofoam so I don't want to just push down as I might break something. It's GT covers that I am installing.