Recently purchased a 2008 BigHorn 3400RL. Don't know if it is just me or if there is some trick to filling the toilet bowl. Our model is the single pedal flush and to fill you are suppose to press 1/2 way. I've only been able to accomplish getting water back in the bowl one or two times. I'm now to the point that I keep a gallon jug of water next to the toilet to add water. Wondering if anyone else has had this problem or if the pedal could be broke.