Oregon subtracts Fed Treasury and Savings Bond interest from state income (ASC code 315). The amount autofills from the 1099INT. How do I change this (wrong) number?

Accrued Market Discount from the 1099-B should also be subtracted from Oregon income, but TurboTax does not pick this up automatically and does not seem to allow me to force a change to the code 315 subtraction.