Oil pump gasket?

If it really is a .010-015" gap, it IS gonna leak some of the flow out. I can't see any good reason to ignore that under any circumstances. Now, how well a thin gasket will close up a .010-.015" gap across that short of a distant, I cannot say. I just checked a cap and did not find any such warpage in it.... you must have a 'Monday' part there LOL