I have 2 aeromasters that were built by a excelent builder (Chuck Gill from The Aeroplane Works) When he passed away his son gave them to me to keep and restore.

Chuck has probably owned 5 or more aeromaster (his favorite plane) and the two I have only have ailerons on the bottom.

this says that the kit most likely flies fine with only the two. if you are feeling up to it maybe you can build 2 top wings and try it with only bottom then try it with both.

hopefully I will have these flying before next spring.

as for wing configuration I dont know which one these have but I can get photos off all 5 (2 planes and one spare wing) of the wings for you.

let me know.