HELP, I am in the process of machining a V-4 cylinder four stroke motor. I would prefer to locate some ready made intake and exhaust valves from a company Like O.S. or Saito to save me the time machining them from bar stock. I cannot find any dimensions listed on replacement parts in any web site (Towers are limited). What I need is a valve face of .250"; Valve body dia. of .094" and a overall length of .705". Does anyone have any valves laying around they can mic and tell me what O.S. valve is close to these dimensions? I would appreciate the help. THANKS