Had a strange thing happen this morning with the 650. As I backed it down the hill out of my garage and went to close the door, I noticed a trail of liquid on my driveway that matched the path I had just taken with the bike. It was a thin liquid and there was nothing on the garage floor, so I thought maybe this was just moisture in the exhaust (like you see sometimes coming out of the tailpipes of cars). So before I started the bike I reached into one of the exhaust pipes with my finger and felt some liquid in there, it was gas. So I cautiously started the bike and it seemed to run normally. I drove it on to work with no problems. My question is, if this was gas, how did it get there? Do I have a problem I need to address? (I just had both carbs rebuilt at the local Yamaha shop this Jan). I should disclose one other thing. When I parked the bike on Wednesday, I had just filled the tank and I filled it more than normal because I was pretty sure I was going to ride some more in just another hour or so. Turns out that I didn't. So it sat in my garage will and unusually full tank of fuel for 2 days. I know that you aren't supposed to overfill the tank because warm fuel will expand and make a mess. Could this overfilling of the fuel tank have anything to do with the fuel in the exhaust? I'm hoping someone has seen this before and has a better idea of what's going on than I do. Thank you!