Been working on this old motor for a day or two, think i have finally got her to where she'll run, so like everyone has advised me was going to replace empeler. So i drain lower unit oil and find that it is full of water, got to looking and found that the prop shaft seal looks worn out. Is this more than likely my problem, if so is there anymore seals i should replace while i'm at, do they sell a kit for this with all the seals i need? Also why does everyone say to replace the empeler it looks fine or can you tell by looking?