I was riding the R100 to class last night and I noticed that there was a bit more valve clatter than usual after I got off the freeway. I started noticing that it smelled a little hot as I was pulling up in front of the college. I park the bike and I could not even touch the dip stick. i spit on the engine case and it sizzled. I wasn't idling very long, just a few red lights after the freeway. I rode about 20 minutes in high gear at about 4500 RPM before that. I was actually a little bit cool outside, so I am not sure what is going on. I went out and checked the oil level at a break in the class and found that the oil was a bit down but was still over the min oil line. I also saw that both of the brake/turnsignal assembly bolts were gone. I think the bike is just revolting against me. I had been only riding it up to the low 4000 RPM untill a few weeks ago because it had seemed like it has a little more vibration when I push it above that. Also for the last month it has leaked out the right hand carb if I park it with the petcocks on so I have been planning a carb rebuild. A week ago when I switched over to reserve on the left hand petcock it took a while to pick up fuel so yesterday before I rode it I had pulled off the fuel filters and noticed that the right one was easier to blow through than the left so I blew them both out with compressed air and switched the two (The left petcock is the easier to reach when I am rolling down the freeway), and I put new fuel filters on my shopping list with the carb rebuild kits. It was only a few weeks (600 miles) ago that I did the tune up on the bike so I don't imagine anything being that far out, but I guess it wasn't that long ago that I washed the bike and the tailight felt solid either. I grabbed a bolt out of my licence plate and took back roads at 40mph and 3000 RPM the whole way home. It didn't feel so hot. I still couldn't hold the dipstick, but no spit sizzle on the block.