Ok well being a carpenter for the last 16 years i just thought there would be mesurments to follow. Did not look for and grooves under the wing yet, and i should say iam just putting it together with no plans on flying it till i feel iam ready. I had the money it seened like a good deal at $62.00 plus shipping so i bought it. Know i just want to see it together looks like it will be cool looking. Yes the planes that came with it do illastrate with pictures i just assumed the would be mesurments to follow. Thanks and any sujetions would be great.