Its not necessary but as you progress and get more confident its definitely something you want to do. Either make them not touching but perfectly spaced, or squeezed together so theyre all uniform and touching.
yeah what mota just said. hey mota i'm pretty good at making them all touch evenly except for the last wrap on the RM2 because of the way it angles over to the post hole. do you have that problem? or do yours all evenly touch? any tips?