What kind of material is your gasket made from, I've had good luck with a one piece rubber gasket. There should be silicone sealer in all four corners of the pan. I would also get a gasket sealer to stick the gasket to the block first. You need to also check the torque on the pan bolts often, once
oil slips in between the block or pan and gasket you'll have to pull the pan off and start all over again. Your pan is fine, when it's off just make sure the mating surface is flat.