Yeah clean the internal thread out, a pick would do the job fine. 40nm isn't right for torque setting, that'll fall out in a week. Should be about 200nm.
Edit: Quick look on autodata says 40nm +51 degrees, then re-check with torque wrench to 195nm.
Edit: Quick look on autodata says 40nm +51 degrees, then re-check with torque wrench to 195nm.