Yamaha C7

[David ilvedson]

List,

I worked on a Yamaha C7, #5070074, about 8 years old.  I 
noticed a odd clicking, frictioney sound and feel.  I removed a 
wippen and found green "emrylon"? in rep spring groove.  
Where the spring contacted the groove the emrylon was gone 
and there was a wood/white spot.  I'm not sure if there is a 
dent in the groove but a drop of Protek temporarily? fixed it.  
Worked smooth as can be.  What is the correct lube here?  
Should I smooth groove with a cuticle stick or such?  Is this a 
warranty item?  

David Ilvedson, RPT
David Ilvedson, RPT
Pacifica, CA
ilvey@jps.net