I am really not very knowlegable with these electrics or what exactly the connection of the landing gear looks like, but when I glue foam to wood, I like to use polyurethane glue. It comes in different brands like gorrilla glue and elmers polyurethane. It foams a bit when curing and fills voids. Just remember that adding more durable wood members usually means adding more weight and your airplane will fly better the lighter it is and worse the heavier it is.