ORIGINAL: MO_Bowhnter
RJ: Does that way of setting the 3rd axis (not at full draw) take into account that when the bow is drawn, the riser rotates as suggested in the spot hogg article Matt posted? It would make sense that when you draw back, as energy is stored into the cables, it would make a right handed bow rotate right, which it does as I can see when I draw my bow back with a long stab on it.
Edit: I see that you go out and shoot to test and it's usually right on.
Another good reason to set the 3rdto the arrow path with the 4rth axis tool.I never used one,I would just shim the sight bar mount with an old credit card or whatever was the right thickness.
I actually learned that trick from my friend that tunes bows for world competition shooters(a few worl records on his bows)on his hooter shooter.I got my bow back after he had installed the new strings and gave me a free tuning on the machine and I noticed the shim(before the 4rth axis tool had even been invented)and that was because my riser was not square to centershot which meant my sight bar could not be used to set my 3rd axis unless it was shimmed so it would run parallel with the arrow,then I could easily use the sight bar and even check if my 3rd was still on while in the field by just putting a level on the sight bar and tilting the bow downhill.