18: Total of balances on accounts never late is too high compared to loan amounts
You have some accounts in your credit file with balances that are high compared to the original loan amount or the limit on a revolving account. The good news is that you've never been late on these accounts. Maintaining high balances has proven to be risky behavior because you don't have much credit available should it be needed, creating a greater chance of becoming overextended. People with the highest credit scores keep their account balances low.
Whenever possible, pay down balances on your accounts. Over time, this will have a positive impact on your score.