Hey, I'm wondering if the Post Office has recently changed the limit on first class. My mom went to mail a package today (she printed off a first class shipping label from Paypal) which weighed 15.3 oz and the guy at the Post Office wouldn't accept it, saying the limit is 13 oz. I know the limit used to be 13 oz for first class, but thought it increased to 15.9 oz a while back. Actually, I think I mailed a package earlier this week that was 14 oz and it went First Class. Anyone had any issues shipping first class for packages over 13 oz and less than 16 oz?