Dale,
I had stuck / icky valves on my CC. I found these files somewhere online, and a local Goyen distributor had repair kits for about $6 as I remember.
I don't happen to have their number right off-hand, but see if you can find your valve numbers in here.
The repair kit was essentially a rubber seal and a spring. Not much too these things assuming the solenoid isn't bad.
Darn, the second file was 1.5M which was too big for an attachment. Let me know if you need an email, or if the smaller file had your valve in it.
Ray