Hope someone can shed some light on this question. I've had 3 PoL's from BBTS this year. All three actual shipping weights (as shown on the tracking system of the shipping company) were at least several lbs lighter than that calculated by BBTS. Is it normal for companies such as BBTS to over estimate the shipping weight and hence pocket the cash? For example, an overestimate of 5 lbs in shipping weight translates to an extra US$20 for UPS Air Service (US$4 per lb). Have people noticed this on their PoL shipment?