Jim

I don't know how you have got down to 18lbs 2oz!!! I am at 22lbs with the Wren SS and 12oz of noseweight, of course I was unable to copy your weight saving mods as my model was too far advanced to go back and rip all the excess glue out. Taking the weight out of the equation you are 3lbs 2oz lighter than me using a similiar battery setup. I am using a 2 litre coke bottle tank and a six oz hopper and my CG is at 165mm . At 18lbs yours should fly very well, I hope to maiden mine at RAF Leuchars this coming Saturday if the weather is ok.

John