I stopped using Production Calls when I found a few guys that make Custom Diaphragms. I haven't used another Production Call since finding these Custom Made Calls!Custom Made Diaphragms are Consistent from one call to the next due to the calls being Hand Laid, have close set reeds, light stretch (my preference) which requires less air and give you better control of the call (from soft calls toloud calls and everyting inbetween). Most production calls are machine made and are stretched too tight, inconsistent atbest from call to call, take too much air to blow and are too hard to control the sound!