I thought my high wing plane had the balance correct and I was about to add down thrust in the wings . Flying characteristics included steady climbing , full down elevator and it would still gradually loop . Airelons were set correctly . When I re-cheked balance I was nose heavey by almost 2" on where my battery should be with out fule . Before I fly again do you think I shoudl add down thrust or will the now corrected balance make it fly some what levil . Its a old time WW! flat bottom air foil but it seems to climb way more then any trainer I have had with the same air foil .

If adding down thurst is there a science to how much to add and at what increments ?
Thanks for the hlep