i just put a new valve on my 64---found out when it is shut off the lever doesnt go all the way to the stop---it is supposted to stop just short-- covering the OFF stamped on the valve--mine wasnt shutting off and i took it back off and looked through the hose end to see that if your set it to touch the stop that the valve was slightly open--backed it up to cover the OFF and wallah the valve was closed....bob