Well Ok not to worry just had a fatal accident to the build, the instructions suggest a hole up the forward fuselage to add weight, so I got the main airframe bits assembled, drilled a 5mm hole all the way up to the wings, filled it with lead shot, tail sitter..open up to 6mm same, 7mm same, in the process of drilling the hole out to 8mm the drill broke through the fuselage wall horrible mess. Off to build something else.