overfilled

I pulled my spark plug today (first time since I bought the bike) to have a peek at its condition, and lo and behold the threads were coated in oil. That's not good. I also pulled my breather checkvalve and it had some pooled oil inside, so I'm hoping it's coming from there and not the rings...

So tresa and I stopped on the way back from gunnison and rode salt wash and sovereign singletracks in moab. My 05 550 had been running great in gunnison and ran great for 12-15 miles, but then sort of randomly started coughing and sputtering and died. I got it started again, and it spewed out a...