I was riding down in Baja last weekend on my '02 xr650r. I was running down the middle of Laguna Salada (moist and soft dry lake bed). We ran probably 15 miles at top speed many times the motor pulling hard and lugging when it got too soft. When we got out onto the hard road again, I had cooked my clutch? The bike has about 2000 miles on it. I was wondering if this is normal expected wear and tear? The clutch had been working properly prior to entering the dry lake. Was the power of the motor to much for the clutch to handle a new tire in that goo? By the way when I got back to camp I had ripped every other center knob off, (clean down to the carcass) on a brand new Dunlop 739at, That gets really old? Any suggestions?