Recently I purchased 2 very slightly used Krieger barrels from an estate sale. Both are threaded for what Bob White believes are Woolum Accuracy tuners. He said Dave Woolum may be out of business, he doesn't answer his phone. Does anyone know if any of his tuners are available from any source. In the meantime Bob is searching for the thread, length, and pitch, and diameter to see if there is a compatible tuner made from another smith. Thank you for any info you can provide.