If I am to consider myself reprimanded I would like to clarify the facts. I never at any time questioned IO540s credentials, in fact I admire them, I was only asking why the subject of heavy metal should be discussed on a forum primarily concerned with LAA, BMAA types. I have never been jealous of another person or their achievements in my life. Also, not that I was specifically accused of such, I have never tried to claim credit for achievements that I did not deserve (I am no Walter Mitty). I do not profess to know the intricacies of GPS either, nor am I ashamed of that. What I actually said was, If someone asks a question in all innocence they are immediatly jumped on by the experts who seem to take great delight in pointing out how stupid the question was. If I have offended IO540 then I apologise, but I do not think I deserve the title of jealous child.