For the last several months UPS has been tacking on additional handling charges and audit charges for use of cylindrical mailing tubes. Often times the extra charges are more than the shipping itself. Has any one else run into this and how are you handling it? Square corrugated mailing tubes alone do not protect the posters. Triangle tubes are stronger but still can crush easily. My solution is to put a standard round mailing tube inside of a square corrugated carton but unfortunately all of the available pre-fabbed square cartons have an inside diameter of 3" which does not allow for the insertion of a 3" mailing tube due to the outside diameter of the tube which is generally around 3.25". Has anyone found a good solution for safely shipping 36" wide posters via UPS with out having to pay these ludicrous additional fees?