<html> <body> <blockquote type=cite class=cite cite=""> I called Renner USA & while they have the springs, they have nothing else and no instructions as to what else is needed to install them.  I guess it's a case of Renner USA vs Renner Germany.  And Tokiwa doesn't seem to make anything that will work. So I can't find any helper spr.ings to even try.  I understand they are a real pain to adjust, but since it's my piano, I can spend the time to get the right. </blockquote> Hi Bob,                Go to a hobby store and get some leather cord of the appropriate size. (they sell quite a variety) Then  thread through the wee holes, and spring coil with no problem. Tip: Sharpen tip and wet the end with thin CA glue, this will make it easy to thread.   You will also need to order a set of flanges with the loops. Remember the springs are in 3 different diameters, so don't mix them up. Wippen assist springs should only support 10 to 15gms of down weight. <blockquote type=cite class=cite cite="">Bob at Pianotek was helpful.  He suggest adding 1/2 punching to the key at the balance rail. My puncings are scarlet (.055). Not having any, I used several layers of maksing tape to get up to about .033, in the shape of a regular puncing, cut in two, and stuck them on --facing the right way-- at the balance pin hole of the key. This indeed did lighten the feel of the piano, but it caused it to be sluggish. Plus it raised the key height 1/16 and the back end, nearly 3/8" (which makes since with the leverage as we calculated is above that 6.2 to 1.</blockquote> Have you checked the balance rail hole height?  If this  is greater than 4mm for a spruce key, or 3.5mm on a key with maple shoes, this may be the cause of  both the excess weight, and the sluggish action.,  I have measured 6 to 7mm on an Estonia.  Pianotek sells a reamer to fix this problem. Do you feel you have to have a lot of after touch for ppp playing? Regards Roger </body> </html>