I installed a new Penske 8983 the other day. In addition to some left/right float between the shock clevis and lower shock mount, I have up/down play in the shock linkage. With the rear wheel off the ground, I can move the rear wheel up and down ~2-3mm, without the shock compressing. The play seems to be at the upper dog bone pivot. This bolt was not removed or loosened during the shock install, and it is torqued down. It would seem to indicate a bad or out of spec bearing and/or bushing. My bike has ~1800 miles on it. You can check the up/down swingarm play by standing on the kickstand side of the bike, tilting the rear wheel off the ground using the kickstand then grabbing the top of the wheel and pulling up and down. The left right float in the lower shock mount can be felt by pushing up on the subframe to unload the shock while grabbing the lower shock body and pulling side to side. The side to side float seems to be the bearing sleeve moving side to side. I checked clearance with the stock shock-same deal. Double checked for any parts that could have fallen out when I removed the shock, and almost put o-rings on either side of the bearing sleeve to take up the slack. It seems the shock might stay centered under load, and I didn't notice any ugly witness marks between the mount and clevis, just light dirt on the bearing seals, indicating that the area was previously exposed and not covered by missing parts. work was done in my garage/shop with a concrete floor, so I would have found anything that hit the ground. I don't detect any side to side play in the swingarm, and felt nothing odd during a 250 mile ride the day after. I plan to take it to the dealer when I have time, and would like to know if anyone else has the same issues.