I will give it a try on lateral balance. Mymodel is aorund 16~17lbs, which is pretty light for it's size. It is 87" wingspan. My Cap was 80" and weighed the same. It is balanced on the tail heavy side. The manufacturer recomends 5~6" CG point. I'm balancing more at like 7", which is great for many maneuvers.

What is an elevator? I may have done it but not know the name. Isn't that a decending Harrier? If so, Yes I've done it and yes it rocks the same side to side.

Now to the pulling deal. I do not start a Harrier with a hard pull from straight and level flight. I typically decend two mistakes high, go to idle and when the model is about to break I give it 2~3 clicks of throttle and snap roll (the model will decend). Then when I stop the snap roll I'm already at 75% or so elevator and ready to Harrier. Looks a lot better than yanking it into submission.
But I haven't been doing his lately because of the rocking issue.

David