Rodney

I use a slightly different proceddure thanb J_R does. I trim the plane out to be flying straight and level at about half throttle. Now advance the throttle and, if the plane dives,add more up thrust or delete some downthrust. If the plane zooms, increase downthrust. If it veers left, increase right thrust, if it veers right, decrease right thrust. Once it is properly adjusted, you can go from half throttle to full throttle with no change in altitude or heading, just an increase in speed with increasing throttle. You will find high wing planes usually require more right and down thrust than mid or low wings do.