I always put a small bead of RTV under the cork strip on the rear main cap and just enough on the pan to stick the gasket then put the pan on the block with 6 bolts ,2 up front ,center and rear. When the RTV cures remove the pan and the RTV will hold everything in place. Then put a fat bead of RTV on top of the cork at the rear main and in the corners where the cork strip meets the block. Put a small bead around the pan gasket and bolt it up. This is how I always do it good results and no leaks.