You all have too much time on your hands if you can argue on such details...When I came back after being gone for 10 years I thought I was having problems and whether it was P-factor, Torque or DT (dumb thumb), it took some time to get my take offs to look right. Then I noticed the tail wheel was loose and it was wandering...So just offer your advice and let the poor guy decide what he wants to try for himself. Time spent arguing is time not flying the way I look at it...