Dealing with Item-related expenses

We often have expenses related to our inventory items that don't arrive until weeks after the inventory is recieved into our system.  Things like Customs/Duty fees, broker fees, etc.  Our Accounting people did not like using the Track Landed Costs feature in NS because it was too cumbersome and complicated, and are asking for a different way to track these kinds of expenses and associate them to items. 

How else can we enter/track item-related expenses that occur after the receipt of the items?

Thanks for any suggestions.

Jeff