recently completed a 3 day 800mile adv type ride on my 350exc. No issues, bike ran great
. I would take the same bike in a heartbeat.
Because of the dusty trail conditions I ran a filter skin, but this made starting a bit more difficult due to the increased air flow constriction. There was a 30mi slab section at the end of the route that wasn't very much fun after a long day. My hand was going numb due to the vibs. I was standing most of the time on this ride, but the extra foam padding in the seat was real nice (seatconcepts.com)
Here's some pics from a single post
up on a different thread...