Yes, you could use the 1200 grit lightly. If the steel wool specks are sticking to the body I would suggest that the top coat is not properly cured when you are using the steel wool. This is very easy at this time of year. The Dingotone top coat is a bit of a fiddle, you have to use very thin coats and you need warm but dry weather for it to dry quickly. In winter you may need to leave weeks between coats for them to dry enough.