Fisher Price Precious Planet Cradle Swing Review

We just had our third baby and our old Fisher Price Ocean Wonders cradle swing stopped swinging after 5 years and the first two babies.  I loved that swing so much I purchased a new FP Precious Planet cradle swing.  First, after owning an older model, I was disappointed that the seat was only half what the old one was.  The whole top half of the swing us fabric, like you would see on a bouncy seat.  It was disappointing for me at first, but it didn't change the way the swing worked.  One thing I like better is that this new swing lays almost flat and there are some nice features the old models didn't have.  I like that the mobile swings away and the trays moves out of the way.  I also like that the seat turns just by force instead of using a button.  The one thing I am not happy with is mine doesn't always swing.  Sometimes it works, but most times I have to start it and then push it to keep it going.  Once going, it will usually stick, but not all the time.  I wonder if the one I have is a lemon, but I haven't bothered returning it.  My son loves it and he smiles at the mobile and goes right to sleep once it gets moving.