Oh my God! This has to be the "Dumbest" Screwup! I cannot even begin to tell you how Utterly Stupid this one act is! Placing a Sealer that does not compress between Two Machined Flanges. I would Conservatively Estimate that the Silicone Lifted this Cap at least .003 off the Block Face. Considering my Main Bearings run at .001, this would result in huge failure of the REAR MAIN!