I'm new to boating(I've been out 3 times).  When I shift into forward or reverse I hear bad klunking sounds.  Not much of a problem when I just ram it and go but its pretty bad easing in gear such as loading the boat which for me is still like parallel parking LOL.<br />I changed the lower unit lube before I ran the boat.  I used super tech sae 80W-90 Lower Unit Gear Lubricant.  I've checked for shavings and see none. What should I do now?    