I have shutoff valves that are now heavily corroded and do not fully
shut-off. My home was built in '92. While researching how to remove
the "crimped" on valves, I found several older posts about
polybutylene (Quest) and how it's no longer used and in many cases not
up to code (for interior use).

I'm hesitant now to mess with these valves. It's seems the time period
has expired for the class action lawsuit. Is there any recent
information on this? From what I've read, it's not a matter of if
there will be a problem, but when.