Do pistons. Anything much beyond the miles you have is a gamble. The ring locator pins have a tendancy of dissapearing. Rings spin, catches port. bam, you're done. Anybody I know that has not done them has wrecked their motor
Primary: change the rollers and the bushings
Secondary: take apart and have a look
Rear susp: There's a little pivot arm deal that your rear shock and a tension rod bolt to. Take it apart and replace the bushings and maybe the actual arm depending on how it looks. When it comes apart in the mtns, its a day-ender. been there. usually the bolts that hold the tension arm and shock lose their bushings and wiggle out / snap in half.
Check the whole sled over for loose rivets.
Take chaincase cover off and look for any visable chunks in the oil and proper tension
