I have just been reading a thread about changing lower gear grease and noticed that they mentioned having seals around the upper and lower plugs. I have a 1983 Johnson 175 and when I drained the grease neither of my plugs had a washer or rubber ring between the screw and the gear case. Am I supposed to have one or the other on the screw? Also, I changed the grease because it had water in there and I put new grease in there and took it to the lake. When I got home I unscrewed the lower plug just a bit and there was a small amount of clear water that came out. Does this mean that I need the lower unit resealed or could it be coming from not having seals on those screws?