I hate chasing leaks. I would suggest making sure the pan is flat and square to the transmission case. And then I would use a ball peen hammer on the holes so they are slightly raised on the bolt side of the pan. That should give you good contact all the way around once you snug up the bolts. If that doesn't work... well then I'm sorry for ya. It should work unless there's something you're not telling us. Lol
