This spring I noticed the red lever on my electric primer was cracked and leaking fuel when the primer was activated. I replaced the lever and primer cap with a Sierra Service Valve Kit p/n 18-7044. Problem solved until I went to use the Schrader Valve for fogging the engine this past weekend. The Schrader Valve would not admit the OMC Fogging Oil using the dispensing tube. I tried three different OMC Fogging Oil Injection Valve-Hoses on my spray can). Is my Schrader Valve bad or is there an issue with an O-ring or gasket in the replacement cover? Years ago, you could unscrew the Schrader valve stem a little to ensure activation, but I’m not at my boat to see if that is possible. Any experience or thoughts as to resolution?