I don't know the details of this yet and as far as I know he hasn't torn the bike down yet but thought you guys might be interested in a SAD SAD story!! A few of you have met my friend Travis, he rides/rode a '98YZ400. All stock except some jetting changes. Regularly changes his oil and performs routine upkeep. I rode his bike a month ago and it seemed as good as day one!! Then out at the dunes over Thanksgiving he's just cruising along and the bike is sounding great till BOOOOOMMMMM!!! And it stops instantly!! He looks down and the first thing he notices is oil on the ground &%$#@!!!! Upon more inspection there's a hole in the left side of the case. I havn't seen the bike first hand yet but he's fairly mechanically inclined and he's thinking he may have snapped a rod which also managed to poke out the cylinder. Needless to say he's a little bummed out and really stressing on what he's going to get to pay to rebuild probably upper and lower ends plus a new side case. I'll keep you guys informed on the progress of this and let you know the details of how bad it really looks once I see the bike myself.