I'm disassembling my brand new 08 YZ450F to grease the swingarm, linkage and steering head bearings this morning. Boy, it sure is nice and easy doing this job when a bike is brand spanking new. It's spotless clean and all the bolts and parts are in perfect order I've noticed this before, but never stopped to ask the question. The swing arm bolt passes through the back of the engine case. When you look through the back of the engine case, you notice there is a recess around the circumfrence of where the swing arm bolt passes through. Should I be packing that recess with grease or leave it dry? Until now I've just been greasing the bolt, but not packing the engine case. I've never had any trouble with the swing arm bolt seizing in the case, but am wondering if this is something I should be doing.