I looked up the plans to my Cosmos 60 and the CG location is around 1/4 inch forward of the main gear position which seems too me to be a bit too far back. As I recall I flew my Cosmos 60 with the CG about 1/3 back for the leading edge of the wing. Throws are not mentioned on the plans for the Cosmos 60 nor on the Aurora plans either. So I would suggest 1/4" up and down on the Ailerons, 3/8" inch up and down on the elevator the Rudder I used 1 inch both directions to start. If you had installed the flaps try 45 Deg down initially and be prepared to feed something like 1/8 down elevator when the flaps go down since the nose of the Cosmos will pitch up and will try to go into a loop. I still have my Cosmos 60 after all these years built it 15 years ago and I have a 2nd Cosmos that has been ruffed in but never finished. I never set my plane up for the spoilers but the flaps all the way down really helped the airplane in the landings.

Dwight L Bogan