They're low on the food chain for easy kits. I helped an Explorer Post build four of them in four teeny-boppers per team. We all had a blast. All flew, all survived and all were assembled by totally different approaches. One team used two 8oz. bottles of Titebond, another used 1/2 of a bottle. I don't think you can mis-build an LT-40 if you take your time and follow the guide. Measure twice, cut once.

Be happy it's not a box of unmarked balsa sheets, blocks and sticks. Some "builder's kits" are not far removed from sending you a balsa log and letting you work with that.