The dreaded "tank problem"s.... I am having trouble with both my gray tank and my black tank. 1) My gray tank is continuously clogged. I have to take a plunger to it about once a month to empty...
Once you get it unclogged I suggest insfalling a sprinkler type tank rinser and flushing more often. I think they are called "Flush King" or something like that. Works great on both my tanks. I use to live in my fiver full time in a park and would flush every five days or so. Best of luck