@marylandbob ~ nice writeup. Great job and congratulations. Not many grasp what you did or why. Your advise likely came from Naturopaths and/or Chiropactors, a solid percentage have taken professional coursework dedicated to SIBO/ IMO. These physicians grasp the medical , microbial and medicinal aspects clearly and know what they are doing. BTW> your low H2 and high CH4 "potentially" point to H2S issues, keep it mind and if so, consider adding bismuth to your protocol.