I fly 3D with right thrust, find on my 2stroke planes I tend to reduce the amount built in or recomended on plans. 4stroke planes all have ended up with more added. I set up for a straight up line without rudder corection so when hovering the tail stays a bit steader when I burp the throttle.
You have to like the "feel" so buy some washers and change the thrust settings. There is no right or wrong way just what works for you and your flying style.
I do balance all my planes a bit tail heavy and mix out knife edge problems. If you have added mixes they will need adjustment after settling on engine thrust angle.