i also to put rtv on the valve cover side only to hold it in place. Otherwise it might get out of posistion and leak when installing. Old techs put grease on the opposite side so you can reuse it again. I use to do that on oil pan gaskets - RTV them to the block and put grease on the oil pan side. Old race car trick is to coat gaskets on both sides (to hold it in place and to reuse it again) with heavy grease, just a light smear. They will seal fine and are easily removed and reused that way without damaging them.
90 YJ, 4.2 with 2150 carb 4.0 Head and headers, Nutter with TFI and MSD. 1" BL, 2.5" spring lift, 33", Goodrich KM Mud Tires. Dana 30 w Aussie, Ford 8.8 w LS. 9000lb HF Winch.