Black tank (blockage??)

[rollingdownthehighway]

Ok, here is a new one. We're seasonal this year. I flush the black tank before we leave with the tank flush and the 'blaster', however, no paper is coming out, only 'clear' water. Yesterday the gauge was reading full, so I tried emptying it but only liquids came out, no paper. however, the gauge was bouncing from 1/3 to empty. I even raised the front as high as I could and still no paper. Now, there is water in the toilet.

Any thoughts on how to get it unclogged and get the paper out? Clear Liquids are draining, so it appears not to be 100% clogged, just no paper is coming out. We do put the stuff in the tank to break up everything, but after two flushes it can go from empty to 2/3 full. (I know the gauge is never 100% accurate).

I'm going to get the wand today and try and see if I can break it up anything in the tank, but any thoughts and anything I can try to get the paper released?