Instruct: Classify Amazon reviews into positive or negative sentiment
Query: 2 small problems

I just purchased this seat this past weekend and so far it seems to be ok except sometimes when my 5 month old son falls alseep his head hangs foward and this is on the fully reclined position rear facing. I guess I will need to install those foam cylinders from the police dept to make it sit a little more back. Also the other day I was turning the yellow knob to release the belt and it seemed to be stuck from the one side but it hasn't happened since. I'll just have to wait and see. This is a good seat when my son is awake, it appears to be comfortable.