My 8 year old son(left handed) cant stop canting his bow left. I believe its in his front shoulder. Cant get him to set it properly. His grip looks pretty good. Ive tried adding a side bar with more weight than should be required and swung way out to the side. When he draws bubble goes right. Its not a weight issue as he cants it the same with a bare bow. When i draw his bow the weighted side rod sends the bubble left. Hes always just had a 10 yd pin so wasnt a big deal. But starting next week hes going to be shooting a 3d league with multiple pins. Would there be a problem setting his sight so bubble is level with bow canted? Im out of time trying to fix the cause of the issue. Thanks.