I agree with all of the scoring folks. Maya gave me some advice in a PM on how to score because I had some big gaps on the trunks of a couple young trees. I followed his advice and it worked great !! I took a very sharp knife and pushed the blade into the bark carefully about 1/4" above a bud on the trunk. You just have to feel the bark " pop " to accomplish the task, so don't push way into the wood. Light pressure until you feel a " pop " or " snap ".
I did this at different levels vertically on the trunk, and also radially around the trunk to push limbs right where I wanted them. Now those trees are looking much better, balance-wise.
Thanks Maya for the advice !!