I have a 25FKS. I drained the black tank over the weekend, and didn't seem to drain properly. OK--Let flush tank water run, open & close tank valve a few times, let water build up, drain, water clear, still didn't drain right. Cleaned out the drain hose--a piece of wood came out-looks like a piece from when they cut the hole in for the toilet Sooo, came home, left about 4 gallon of water in the tank, went to flush the tank and lots of KA KA came out, no more debris. Flushed and flushed--nothing. I was wondering if anybody has taken the ABS line off at the tank entrance. I see it has a adjustable hose clamp around the fitting at the tank entrance. That being said, the ABS line is really tight--next to the frame, ETC
Any ideas would be appreciated!!