I builded the 1/4 scale SIG CUB and the 1/6 also .
This is a excelent kit like most sig kits and both fly like birds.
On the SIG cub, one of the most critical part of building is to make the wing struts perfectly adjusted, in order to not twist your wings when you instal them. Plenty of the flying troubles of cubs come from twisted wings due to bad strut adjustement