welding coated headers

hey guys

I don't know if I put the steering linkage in upside down or if the motor is sitting to low
either way, the castlenut from my steering linkage had made a few deep gouges in one of my dougs headers

I have the engine and the headers out right now and im thinking of welding in the gauges

now, the headers are ceramic coated

is this possible to do or will I make matters worse?