Apparently this is a pretty common issue and mine is seeping to the point now that it is actually dripping off the bell housing, which I cannot stand. So I am going to attempt this myself, I watched a youtube video and it looks fairly straightforward but I'm sure there are probably some tips that I should be aware of. In addition are there any worthwhile upgrades or additional items I should/could service while I'm into this to save digging in to the same parts again down the road? I thought I read somewhere about a pedestal upgrade??? Any advice is greatly appreciated. BTW the mileage is about 230 on an 01 SD.