dont use the black rtv, use the ultra gray, and after youve scrapped all the old gasket sealer off, use a clean rag and pour some acetone on it and wipe the pan and block mating surfaces down to remove any residue. then put the gasket sealer on the pan in about a 3/8th bead. if its right the whole tube will be used. then once its all tightened down, youd wanna wait at least 24hrs for it to cure before filling the engine with oil. after its cured you could take all the bolts out and the pan wouldnt come off, usually has to be persueded with a hammer and putty knife. lol. key is to make sure no oil residue on the pan or block mating area. thats what the acetone is for. also is great for cleaning the head and block before installing the hg, and all other gasket surfaces too. keep up the good work.