Haggar said..
Good question and what can you fill / undercoat the patches with so thay the finsihed coat is all the same level and smooth ?
international... epi fill. Is great stuff to fill..it s rock hard and can be smoothed off with water and finger .before it drys after 12 hours .
i can send picture of tin if you want .it s 2 pack .mix .( white) you can hit it with a hammer when dry .
rust kill has a built in premier .