Round two

Knowing that the yesterday mentioned Black Tank was still somewhat plugged we decided to try again to clear it completely.  Long story, short - we plugged it again.  We tried last nights trick but didn't work so we just left it open hoping it would drain on it's own.  (Connected to sewer hose.)  It finally did drain later in the evening.  We know it still isn't fixed.  We have a couple other ideas but they require a trip to Camping World.