2000 XC SP with the 600 liberty motor (first year it was made I think!) 5700 miles and no problems. Replaced reeds and boots once. Jetted for our altitude. It's been relegated to backup sled status the past few years so it doesn't get ridden much, nor does it get much TLC either! But it always starts on 1-2 pulls, runs strong and has never let us down. We discuss doing a top end rebuild every year but the compression doesn't drop so we don't change anything. Lubricated via the dreaded citgo sea and snow, too!