I had my output shaft seal start leaking on my 1999 K1200lt about 2 months ago. Ordered a new seal and was not very happy with the design, this seal looks like a grease seal on the old trucks I used to work on. Great for keeping grease in but not a good oil seal because there is no spring for tension. So I started looking at an after market seal and found a Viton oil seal for high pressure pumps, it has a spring for slight pressure on the sealing shaft and is the same dimensions as the OEM part. I checked the sealing surface location and it's the same as the OEM so I installed it last weekend. I have about 50 miles on the bike and no leaks, I know that is not many but time will tell. My question is has anyone else tried this? I can't believe that BMW would not up grade a seal that has such a poor track record.