I just noticed earlier this week that I have a leak between the transmission cover and the engine block. My bike Has 87,500 miles on it and it has the original water pump. Is there any conventional wisdom about how long the stock models tend to last? Money is tight and I would prefer not to add the cost of the pump to the job. But, looking at Roady's tutorial makes me think I don't want to do that job twice if the mileage makes it seem that I am close to needing a new water pump anyway.