Just wondering how this works, I shipped 4 identical packages to the same customer. each one weighed exactly 57.5 lbs. When I entered the weight I just put in 58 to be on the safe side, well I get my bill today and one of them had been re weighed and I was charged for a 88 pound box??..nearly $19.00 in fees. I have shipped these same packages for 5-6 years now and everyone weighs 57.5..they never change, I called and got the adjustment no problem but I'm just curious as how stuff like this happens. I could beleive someone may have missed it a pound or 2 but 30 pounds??thanks!