<html> Hi David,               Peal about 2 inches of the woven shell back,  then clip the core material back. Stretch the shell material and use a very thick darning needle to thread through the holes and spring.  No glue needed. Trim with sharp razor. Roger At 07:06 PM 7/31/01 -0700, you wrote: <blockquote type=cite cite>I'm installing a set of Renner turbo wippens with assist springs and the last 20 or so do not have the spring.  Renner provides a kit to do those last 20, if necessary, and in the case of this piano, it is.  The cord which secures the spring in place seems to be sized with glue to help feed it through the too-small-holes in the back of the flange.  Is there a special technique to getting that cord fed through those holes?  Once done, what is the best way to secure it?  And finally, what kind of glue works best for sizing the cord  David Love </blockquote> </html>