There is only so much you can do unfortunately.
Keep playing around with it until you get close and call it.
Depending on when the song you're trying to sample was made, you could try messing with the polarity of one side to see if that helps, depending on what you're trying to do of course.
One some old recordings (a Sam Cooke song is what comes to mind), I've been able to mess with the polarity to drop vocals and the like.
"I don't have to dodge shots, I'm the shooter".