Thanks for all the info Edward.My weight all up is not far away from the suggested weight by the mgfers although the little .30 4s is a weighty motor and C/G is slightly nose heavy at 115mm measured from the leading edge of the centre section.Movement forward and aft doesn,t seem to make a great deal of difference.Members at the club advise "just fly it".Easy to say when its not your model!! Weather of course here at present is mid winter and flying days are not frequent,however I,m not in any hurry and will be patient until summer arrives with more mellow conditions.I have plenty to fly in the meantime,hope to send photos soon! Brian Webber