There have been some instances of timing chain victims in 08+ models. This thread should give you further insight:
www.thenewx.org

Timing Chain Victims?
How many people have had to replace or service the timing chain, tensioners, and guides? I'm pretty sure mine has recently gotten much worse and will be going to a shop this afternoon for a quote. Figured I'd help the community out by keeping track of all the guys I know of that have had this...