Going from recurve to longbow should not make a difference, but it does to some people due to the sight window cutout and handle size,shape, and mass of certain bows. If you shot a bow with the same riser like Morrison take-downs you will not see a difference. It boils down to your shooting form or alignment. I switch hit daily from one to the other. Hitting left is a form issue in my opinion since I shoot the longbow one end and the recurve the next end. When my back tension goes, all my shots hit left on both bows.