It is extremely difficult getting the oil pan off. My friend had a cherry picker (engine hoist). I loosened the bolts and lifted the engine up. That made it possible to take off the pan and clean out all the vinyl or plastic pieces left inside from the sprocket. I had to remove the transmission braces and move the starter out of the way to do the job. I cleaned out the pan and applied the new gasket to the pan and got it back into place. I then placed the front and rear seal on the pan. I tried to put the pan back on with that rear seal, but destroyed the seal in the process. I had another one and decided to only put on one side of the seal and then the other side when it was around the oil pump. It was a tight fit.
Good luck with that.
Swanny