Thanks for your input....Problem solved (with your help)..Thanks. Found the vent tube for the fresh water fill too long with several kinks. This prevented the tank to vent and caused the blow-back. Had to trim the tube to proper size and install a slightly smaller tube "inside" the OEM tube. Sort of a "stent" to hold the OEM tube open. Worked great....Now on to the Next thing...what ever it may be !!!!!!
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