HI, besides building offroad track I actually race boats at penrith, I run 3 boats all with zenoahs, all modded, and the only problem I have had is when one of my boats went over I and I must underline I didnt check the amount of water that got in the radio box and my battery went dead in the boat at full noise (oh how messy it got then), other wise the usual story applies, keep the batteries charged and you will have hassel free running,some times I have had to re bind the receiver to the controller but only a couple of times, the story about the prop making interferance must be from a plane dude, I have never heard it before, regards Jason.