I have been loosing my hearing and finally reached the point that I was gonna quit making calls. If you can't tune them then its just a block of wood. My wife over the years has watched me tune calls and we have talked about the sound. She stepped up and is now tuning my calls. The first calls are going out to see how she is doing. Hopefully my friends will be able to tell me where, if any, adjustments need to be made. Most guys say their wives run them out of the house when they start blowing on them. Am I a lucky guy or what!!!