I know you may not want to hear this being that you spent so much money building up your Dana 30 but unfortunately, the leak you have is the result of your axle tube being bent. Outer seals will NOT fix the problem as they are just designed to help keep water and dirt from getting in the tubes. At this point and time, I would just run your axle as is until you can afford to replace or upgrade your axle. Just make sure to check and/or change your gear oil after doing any water crossings.