I just finished replacing the rear leafs & blocks with new 4" springs. I noticed the entire right rear drum backing plate and rim (back side) were covered in what appears to be axle oil. I first thought it was a leaking wheel cylinder but the brake fuid in the res. looks ok. I need to first clean-up the goo but it looks like a blown axle seal. Anyone messed with replacing these? I know the innerworking of the 12 bolt and have read several articles through-out the years on gear installs. I am wondering how difficult it is to pull the axle and replace the seal. I think I just need to remove the diff cover, unbold and remove the center pin (I think that is what it is called), push in on the axle and remove the c-clip. Am I even close? I plan on checking the bearings and replacing the oil soaked brake shoes (I will do both sides). Thanks for any assistance! Overdrive P.S. The rear springs are fantastic!!! Much better than the 23 year-old stock springs with lift blocks. The ride is 100 times better (Firm yet not harsh).