If the bike is still under warranty bring it in to the the dealer and have them check it out. Even if they don't find anything at least the problem will be documented. If it gets worst later they won't be able to view it as something new.
I agree with him.
Once you have the dealer look at the bike don't stop there!.
Take it a step further and call Honda Customer service to report the issue to them.
http://powersports.honda.com/questions/customer.aspx
Times have changed and Honda is aware of these issues,in fact they now have a direct line for "Goldwing" when you call them!.(Some don't know this)
What they do these days in log your complaint to your VIN,so no matter what happens down the line,Your report is right in your file.
I'm getting a new engine installed right now because I had filed complaints with Honda after I left the dealer the first of three different times asking them to ride the bike.
Honda knew the issue (because of my thinking to call them to log the complaint) but the wrench says "It doesn't do it for me",and Honda said "we will fix it under warranty,but not until the mechanic can find it or it breaks!.
Well low and behold the transmission blew up big time a couple months later,and now I'm getting a new engine because of what the dealer said to Honda.
Honda is standing behind the warranty by doing the right thing.
To bad they didn't fix the bike when it was a little problem,instead of now needing a new engine because of the damage the tranny gears caused to the cases when it blew up big time.