hi there, ive heard people mentioning having a dump valve that can be turned on and off but ive never been able to find, in detail, how to do this and its something i really really want to do on my erst s2. ive heard someone mention using an amal valve but then ive read elsewhere else that an amal valve isnt any good................someone out there must have managed to make there dump valve turn on and off as ive heard it can be done so i was wondering if someone can give me step by step instructions and a list of whats needed please. thanks in advance everyone



dave