<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> <title></title> </head> <body bgcolor="#ffffff" text="#000000"> I dont think I understand the logic behind this claim.  Whatever friction there is at the lever pin simply restricts the amount of movement of the lever for same spring strength.  I suppose more of the springs energy might be directed to jack return... not really sure about this either when it comes to it. The rep lever springs upwards and downwards with equal strength regardless of the tightness of the pinning. The only thing that can change the relative pressure between up and down would be a repositioning of the pin... i.e. changing its leverage moment. I would suspect, that 8-10 grams works well because it fits well with the multi-tasking between the rep spring and other related parts... ie jack return, hammer lift, appropriate friction levels for centers belonging to these...etc. Cheers RicB <blockquote> Pinning the repetition lever to 8 grams restricts the jumpiness of the hammer on key release and directs more of the spring's energy into returning the key.  When I'm doing a very careful regulation of a performance piano (where "it's so even" is the compliment I want to hear) I use an 8-gram weight I have that has a hole in the middle.  If I put that weight on the screw that regulates the rep. lever's height (the short end of the rep. lever) I want the pinning tight enough that it holds the weight.  When I place it on the drop screw pad (the longer end of the rep. lever) I want the lever to gently fall. dp</blockquote> </body> </html>