I don't think Jack is 90, I will bet he is pushing 75. Maybe he is just looking like he is 90. One of my best fiends played in his band when my friend lived in Berkley in the early '70's. I will call him today and see what he thinks. Michael, my friend, is a guitar builder and cowboy singer. He hired Jack last year for the cowboy poetry and music festival in Alpine, Texas. What is the RS? Stay tuned.