I am interested in conversing with anyone who might have had a personal relationship, conversations with or owned any of his designs (RS-1 thru R-6). I am particularly interested in the R-3 and the R-4. I have just acquired an uncompleted R-3 and would really appreciate conversation with anyone who might have started or flown one.I can be reached through this forum or my email address: jhstringer.jhs(at)gmail dot com .