Black tank showing 1/3 full after emptied
We used our 23B for the first time this last weekend. Everything worked great, but I noticed after dumping that the gauge still shows 1/3 for the black. How I tell if it's just something covering the sensor or there is actually crap(no pun intended) still in there?
2009 Jay Feather 23B
2012 Silverado 1500