Hi all, I have a 2001 DRZ 400S with 6500 miles on it. I put it away last winter fogged the motor, fuel stabilizer, etc., This year when I took it out I noticed what appears to be a grumbling that comes in and out (bearing perhaps). It is coming from what appears to be deep inside the left side of the magneto cover. I can't hear it when the engine is cold but it gets more pronounced as the engine warms up. It also doesn't seem to be related to engine RPM. Also it started after the bike sat for 4 months - it wasn't there when I put it away for the winter. I don't think it is the water pump as it seems to be coming from the other side of the magneto cover. Any ideas? I am hoping this is a problem other DRZ owners have seen. Thanks in advance.