Mine did the same thing and I researched and determined the front brake switch was sticking. The brake light was staying on. Bought a new switch ($80 took 5 weeks to get it) and when I started to install I decided to clean the old one as a try. It has worked fine ever since and the new one...
I did my own 600 mile service as well. Bought a new snap-on inch pound torque wrench and some new (un-worn) sockets and allen bits so i wouldn't booger up my bolts. Was anyone besides me surprised at what came out of the final drive? It was about two teaspoons of black sludge!