Bike chain worn to 1% according to indicator tool My bike chain is worn to the 1% gauge on my indicator but only on certain links.  I could check a different link and it won't fit at all. However it would drop right through on certain links. 

Should I be looking at replacing the chain and rear cassette?
I would replace the chain at such condition (if there are 3 or more places or if there are multiple links).
About the cassette it's another question, and if you can't decide yourself, it should be checked in LBS probably.