I'm just looking through my RSM "Lark" plans and I've come across an item on the plans calling for "LUCKY" boxes for the flap hinges .
The flaps and elevator are built up asemblies , but I'm not familiar with the "LUCKY" boxes .
Ummmm ,
What are they ?
I'm sure they are mentioned in the "build" booklet , but I'm not sure , as I don't have it handy right now ...