Noticing noise going into reverse when on hose
 

I noticed when I run the boat on the hose, when I shift into reverse I hear a "clank". I know it was doing this last year as well, but don't really remember it doing this all the time. I don't hear this clank going into forward gear nearly as much, very faint. I figure after this summer, I may have to open the drive up and give it a good inspection and repair/rebuild as necessary. Just curious if anyone has heard this or dealt with this noise before? It doesn't sound normal to me, but what do I know..........:readinghelp: