Useless assesor- any tips on how to avoid it?

[hrvojej]

Make a backup of export_descr_character_traits file. Open export_descr_character_traits and find the following:

Trigger governing19
    WhenToTest GovernorBuildingCompleted

    Condition GovernorLoyaltyLevel > loyalty_disillusioned
          and GovernorTaxLevel < tax_high

    Affects BadTaxman  1  Chance  xyz

Replace the xyz number with something you find appropriate. I have it at 5 (5% chance of getting the trait under said conditions).
Do something similar to the badfarmer trigger.

edit:
oops, I just saw you said tax farmer, not just farmer; sorry; just change the aforementioned trigger then, and you'll be fine

Cheers,