So my KHS Flite I bought for a bargain on the Hub Classifieds is second hand off course. So after washing her after the R4S on sunday, I noticed the following. The Chain seem to be quite badly stretched . From what I can see the Cassette is not to badly worn, neither is my big ring. My Small ring is showing some Shark Fin patterns. So my question is, based on the pictures what needs to be replaced (on a budget of course).