my 07 fx has 4,000 miles and I have not had any problems. I do the regular maintenance things, change oil, grease, check bushings etc, but nothing you would call a problem. I just changed carbides on my skis that had 2400 miles and my son ran some beads on the front part and installed them on his sled to get him thru the season. I added low snow wheels in the front of the skid and i just changed my slides with 1700 miles and they prob would have gone another 500 at least. I have all the updates including the 08 suspension parts, ball joints, fan, cold start kit, and all other updates (I have a good dealer) i've closed the tunnel and put on a tall windshield as well.