Rust Dilemma

My cable hangars are welded to my steel frame on my Fuji Newest. The
one
near the seat tube (on the top tube) was rusted. I used my dremel to
remove
rust which was on the inside portion of the hangar, as well as at the
junction (weld) of the hangar/top tube. What is the best way to deal
with
minor repaint?

Kerry