Ford Model T - Fixing Rear Seal Leak

Today I show how to fix a rear seal leak on a 1913 Ford Model T.
Recently an oil leak had been seen on my drivers side rear wheel and I suspected that it must be a seal failure...but it wasn't!
After talking to both Steve and Don Lang from Lang's Old Car Parts, and carefully measuring all of the components (wheel bearing, sleeve, drive shaft) and inspecting my inner seal (which was good), it was determined that my problem was too much oil in the rear differential! Lowering the level about 1 to 1-1/2 inches below the fill hole solved my problem, but going thru the process made everything better! It just goes to show you that sometimes new parts aren't necessary...just good knowledgeable help!