@MountainND, I understand that you wish to increase your automatic payments. You can also set up automatic principal payments by completing a payment authorization form. To get the form, follow these steps:
Go to your My Tools tab, and under the Documents & Forms heading, select "Get Forms."
Under Banking, select "Loans."
Select the "Set Up Recurring Payments to the Principal Amount of Loan" form.
You can also make extra payments to the principal through our automated voice response system by calling at 1-800-531-8722. - Ben