How's the bike holding up? Mine just turned 2400 miles and is kick'n some major ass! (Mostly mine!), Wow, the comfort level after an hour or so can be a bit tireing though. Anywho's, just check'n to see if the "few" of us are experiencing any "unique" issues with our "rare double R's". Is our oil filter different than the 636? I think so, so what's the aftermarket brand/part# etc? What synthetic oil is best used for our babies? Many thanks for your responses, and spank the throttle will ya!?!