There are 5 places to verify the additional rates/amounts that are added to the actual freight amount.
The hierarchy for Adjustment Charges (% increase OR decrease):
Administration | Carriers | Facilities | General Tab | Rate Adjustment % Field
This % rate is the default for ALL Services for the Carrier if there are no additional entries in the Service Tab.
Administration | Carriers | Facilities | Services Tab | Service Fields
The hierarchy for Shipping Charge Scheme:
NOTE: Shipping Charge Scheme's are in ADDITION to any adjustment amount.
Administration | Facilities | General Tab | Shipping Charge Scheme Field
Maintenance | Ship Codes | General Tab | Alternate Billing Window | Override Ship Code Field
Maintenance | Customers | General Tab | Shipping Charges Scheme Field