How do I enter CA Source Income from a K-1

I am a non-resident of California. In entering my California k-1 income, Turbo Tax only asks you to enter the federal number based on California law.  It never asks for the California sourced income.  For example, if my federal loss is $10,000 and my Federal loss based on California law is $11,000 and my CA sourced income is $1,200, TurboTax picks up the $11,000 amount.  When entering the k-1 items, it asks you to enter only numbers that are different from the Federal numbers. (not the CA sourced amount).   As a result, TurboTax is calculating my current year CA loss incorrectly and this is putting an incorrect number on CA 3801 that carries forward these losses.  I tried to manually enter the correct amount of CA source loss on the worksheet for 3801 but TurboTax will not let me enter a number manually.  How do I get TurboTax to correctly recognize my current year, CA sourced k-1 loss rather than the Federal amount adjusted for CA law?