Did a complete oil change (per the Yam. book) yesterday and had a small problem with a leak at the external oil line or recovery line that runs to/from the oil strainer http://oem.thumpertalk.com/2004YZ450Foilpump.aspx . After the oil change I ran the bike for about 3 minutes at idle and inspected for leaks at all connections and found no issues. Proceeded to put skid plates on with engine off when I discovered a small amount of oil leaking from the oil line. Took it apart after draining new oil and inspected the O-ring (part #19. http://oem.thumpertalk.com/2004YZ450Foilpump.aspx and everything looked fine. Filled her back up only to have the same problem . Pulled everything apart and noticed the connection between part # 18 and 20 http://oem.thumpertalk.com/2004YZ450Foilpump.aspx isn't flush like it was tweaked a little bit(oil line didn't have any nicks in it like it was hit)? I managed to pull the screen off and bend that oil hose connection above a little bit so it sat in that connection a little better but still had some leaking occur? It looks like I have the right O-ring in place but wonder how much more I can adjust(bend with a rubber hammer) that oil hose? I also blew out the oil hose with my compressor to make sure I didn't have any debris in it. What a poor engineering connection Anyone else have this problem? Any ideas?