I used goo-gone and I used my fingernail to gently get the residue off. I also used water frequently to wash away the debri that was starting to come off. There was a tiny bit of shadow but not too bad. I covered it with new badges.

Here's my ride of another old skool badge.

side
rear

 

Got it all off with the elbow grease, fingernails, and wd40. Thanks guys