<!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"> Hi I'm guessing the English action refered too is more or less similar to the following diagram. As you can see, the key has to pretty much make it back up on its own.  There is a repetition spring to bring back the jack however, and if the hammer is checked high enough and the return spring is strong enough it is possible to get the jack under the knuckle quite quickly, aiding in the return of the key.  That said, the key has to be friction free enough and weighted appropriatly. It simply has to get moving on its own. Not much you can do except regulate checking as high as you can get away with, get rid of excess friction, and make sure you have enough weight back of the balance rail pin. Cheers RicB <img src="cid:part1.03060304.08080800@broadpark.no" alt=""> Ed writes: I dunno what is involved in these actions.  It would be easy enough to place a weight on the end of the key and see what happens. regards,     Ed Foote RPT </body> </html>