I've had some success in the past removing those, but I also ruined two Project Justice discs. A combination of the hairdryer and goo gone methods worked best for me, but I don't remember which order I did them in (heat then soak, or soak then heat). I think I also put some more Goo Gone under the l...

+1 Mod_Man_Extreme for an S-Video modded Genesis. Great person to deal with.