I am new to hunting and I have encountered a problem with my box call. It has stopped producing proper sound. Its not that the tone is off, it barely makes any noise at all suddenly. I have tried adjusting the screw thinking maybe it got loose but it didnt help at all. Everything I have found online about box calls no longer working have to do with it having got wet, but this call did not get wet and even if it did, it is a waterproof Quaker Boy Typhoon. Any ideas what might be the problem and how to fix it???