Exterior trim removal question?

This morning I've decided to take the ugly side trim off my '73 swinger. I've removed everything and been left with some nasty brownish black goo:wack:. You guys have any technique/recommendation/product that would help remove this crap?

...thanks in advance
.mike.


So new to this forum. I just purchased a 1973 dart swinger and want to get rid of my side trim as well. First looks like we have similar cars so think u answered my question on if the 73 darts had glue on or mechanical fixed trim as I know some year mopars were bolted or riveted. Any tips on the best way to remove the trim without messing up the paint etc... any help would be appreciated - thanks